We have been search for WordPress heroes (top WordPress users), but forgot Matt Cutts, who himself may not realize that he is one of the WordPress heroes.

Why?  First of all, his speech on WordPress at the WordCamp San Francisco and the great SEO results with WordPress inspired and encouraged a lot of people (business website owners, Web developers, SEO experts )including me and many of my clients to switch to WordPress from other platforms. At that WordCamp, he confirmed my early observation was right. Matt notes “WordPress takes care of 80-90% of (the mechanics of) Search Engine Optimization (SEO).” at his slide 12 of the 50 at "SEO for Bloggers"

Second of all, his only Website is running WordPress with an Alexa ranking 4,193 (as of this writing)
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It proves that WordPress can handle pretty heavy traffic with ease. (Alexa says 50% of sites are slower )

If you are serious about SEO with WordPress, you should watch this video over and over again:

These points should be noted

Plugins recommended by Matt Cutts:

1. Akismet
2. Cookies in Comments
3. WP Super Cache
4. Enforce www. Preference
5. Feedburner Feedsmith

Avoid Backlink Obsession (BO):  Sometimes fewer links are better than more. (check out slide 18)

Don't forget image search, videos, etc. ( this point encourages us to think of add some more images for our posts and create more video tutorials for Youtube or other video sites.)

Find some more tips by yourself at his page: "Matt Cutts on WordPress".