I follow and occasionally post on the WP-Hackers Mailing List (usually asking for help with something PHP code based Im stuck on). Someone had asked about WordPress SEO plugins and listed these as SEO plugins theyd tried: HeadSpace2, Platinum, Keyword Statistics, WP Seo, SEO Pressor.
Another subscriber suggested looking at the new Yoast WordPress SEO Plugin and I in my capacity as an SEO expert
responded http://lists.automattic.com/pipermail/wp-hackers/2010-November/035756.html (from archive of the WP-Hackers list, also pasted as the first comment below).
It would appear this upset the author (another SEO expert) of the Yoast SEO Plugin (Joost de Valk from yoast.com) as he responded a few days later http://lists.automattic.com/pipermail/wp-hackers/2010-November/035852.html (also posted in the comment below).
I started writing a response for the WP-Hackers list, but it is not the place for this type of exchange, (SEO experts fighting it out should be in a back alley somewhere
) hence this post and the Yoast WordPress SEO Plugin Review page on my SEO/AdSense Templates site (thats one LONG SEO plugin review
)
Note the new Yoast WordPress SEO Plugin Review page went straight in at number 5 in Google for the title search Yoast WordPress SEO Plugin Review, right after the 4 results from yoast.com. Only 19th for WordPress SEO Plugin Review though 
Heres what my response (rewritten to add a little SEO) that was going to be to the WP-Hackers List.
SEO Experts Battle It Out
David,
before you insult people, check out who youre insulting.
Joost, I did not insult YOU personally, I said
Anyway, had a look at the plugin above and it doesnt add anything truly worthwhile. Its not an SEO plugin IMO.
Im afraid from an SEO perspective your SEO plugin doesnt add much SEO value to a WordPress site (being able to manipulate the title is useful if you use a standard WordPress theme).
Any good WordPress SEO expert knows you can achieve so much more at theme level with WordPress plugins supporting the SEO theme coding. A plugin would find it difficult to say change those menu items on the WordPress theme you use that are wrapped in a H3 header (its possible, but youd loose the CSS formatting of the theme).
Why on Earth would you want the words
Why Yoast is so speedy
Categories
Friends
My Other Projects
Wrapped in H3 headers on lots of posts?
The Yoast ones good for the home page if you are after the Yoast SERP (though you shouldnt need help with that easy SERP), but the rest, you really dont want a H3 header with just Categories in it if you are trying to search engine optimize a page about WordPress SEO. As an SEO expert who is clearly very good at PHP coding you should know this.
Seems like a waste of headers when youve put so much effort into optimising your other headers without being spammy (nice use of headers in the main content BTW).
In comparison view source of this page and see there are no wasted headers in the template code, I use a span for the menu items for example adding no SEO relevance to them.
Your WordPress SEO plugin can not fix this SEO mistake in your WordPress theme code, it can be fixed by editing your template files though.
If youre this good, beat me at WordPress SEO in the rankings [1]. Ive been doing SEO for 8 years and been getting results all that time, the best SEOs in the world will tell you I know what Im doing. [2] I wrote the first canonical plugin for WordPress before it was in core because Matt Cutts himself saw fit to ask me to do that. [3].
I consider myself a bit of an SEO expert, Ive been doing SEO for almost 9 years, does that mean I win something because Ive been doing search engine optimization longer that you
.
Ive offered SEO services for almost 8 years and consistently performed well, I have long term SEO clients from the month I started offering SEO services. I only take on long term SEO clients and havent taken on a new client for over a year: taking it easy for a few years, getting over a major operation on my back and spending my time chilling out messing around with affiliate stuff for fun rather than dealing with SEO clients.
Please, seriously, go play somewhere else with your AdSense Templates. Some of us make money doing SEO on actual sites that dont have to hide doing SEO.
My AdSense Templates site is a hobby, not a business per se, though its very important for learning and testing SEO concepts (Ive setup hundreds of SEO tests).
The Talian 05 theme is by far the best WordPress SEO theme available today. Feel free to take a look at the SEO code behind the theme (this site for example) and show me a better SEO WordPress theme, if you can Ill send you (anyone) $500 by PayPal.
Quick Search Engine Optimization Test for SEO Experts
Which have SEO value in Google:
Alt attribute text of a linked image.
Alt attribute text of a non-linked image.
Title attribute text of a text link.
Title attribute text of a linked image.
Alt attribute text of a text link.
I know the answer to all the above SEO questions (important SEO questions as well) as I have multiple long term SEO tests for these and many more SEO factors (thats what good SEO experts do). I dont list my SEO tests online as in the past Ive had idiots damage them (like linking to a page with no links sort of stuff).
SEO Experts Should NOT Use Nofollow Attributes
Im curious if you are such a great SEO expert why have so many nofollow links on your site and generated by your WordPress SEO plugin?
You do understand they delete link benefit, any SEO expert worth their fee would A) know this and B) find a solution to remove them on their own and their clients websites and certainly wouldnt generate more through an SEO plugin!
I wanted to insert some expletives there but refrained from doing that. Couldnt refrain from this rant though.
I appreciate you refraining from lowering the tone of your response to that degree Joost.
Seriously, stop wasting the valuable time of the great developers on this list and go help your customers some more.
Did you even read what I was posting about nofollow and WordPress core here? You think trying to remove as many nofollow links from core WordPress is wasting WordPress developers time!!! At least one WordPress developer agrees with me as they have set the next version of WordPress to remove the nofollow attribute of Reply to comment links (which is great news for thousands of WordPress users).
If you really believe this in not important you are not a very good SEO consultant. I hope you were just being petty as you took my quick review of your WordPress SEO Plugin badly. Please see my full Yoast WordPress SEO Plugin Review.
[1] my ranking for WordPress SEO: http://www.google.com/search?q=wordpress%20seo&pws=0
[2] check out my LinkedIn recommendations: http://www.linkedin.com/in/jdevalk
[3] Matt Cutts mentioning me in his canonical release movie: http://www.youtube.com/watch?v=Cm9onOGTgeM
I dont consider any of the above particularly important (didnt look at them) in determining your SEO abilities, the proof is in what you actually do SEO wise. I have no idea how good/bad you are at search engine optimization overall (dont care either). Ill just say like the vast majority of so called SEO experts sites Ive looked at you arent fully optimizing your own code, Ill leave that to others to decide what wasting loads of link benefit on nofollow links on an SEO experts website and damaging other webmasters SEO efforts by producing a WordPress SEO plugin that can fill a site with nofollow links means.
Will be interesting to see if you take the constructive criticism of your WordPress SEO plugin on board or take it as a personal attack.
BTW did anyone like how I managed to optimise this page for the SEO Expert SERP? Its a bit forced, but didnt want another page just targeting the WordPress SEO Plugin SERP. Maybe get a worthless SERP like WordPress SEO Expert 
David Law
SEO
plugin, SEO plugin, Wordpress SEO, wordpress seo plugin