Just write post the same way you would a web page. Wordpress works very well in search engines with good Seo optimized posts.
have a good permalink structure...for posts and pages....also use general seo for static ones..like say not much link......and make blogroll links nofollow comments nofollow and use least possible graphics....avoid image links and javascript....some seo plugins are available for wordpress....download n install them..do google search..
You can apply some seo techniques on word press , like post in Title Tag and url instead of default url.
heres some information http://www.dech.co.uk/2005/11/ultimate-wordpress-seo-tips/ http://codex.wordpress.org/Search_Engine_Optimization_for_Wordpress http://seo.blorc.com/seo/wordpress-seo-first-steps/
I use a great plugin called All In One SEO which helps simplify some of the SEO tasks. The biggest benefit that I've found is that it will use an excerpt of your post as the meta description for each individual post. The benefit I've found for this is that SE will use this description when listing your post. It will also allow you to enter unique keywords for each post. It works on WP Pages as well. Good luck
The "Optimal Title" plugin is very useful and one I use all the time. It adds the post title at the start of your page header title. Also, have the /%postname%/ variable in your permalink structure. This adds the title into your URL. Of course, use your targeted keyword in your title of the post and sprinkled throughout the article. Tony
You can also use this cool hack that I learned about from Chris Pearson. It makes it so that the title of your post/page shows up the same way in the SE. Delete the title tags and replace them with this code: <title><?php if (is_single() || is_page() || is_archive()) { wp_title('',true); } else { bloginfo('name'); } ?></title> Code (markup): Then instead of your posts showing up like this: MyBlogName:MyBlogTitle they will show up only as MyBlogTitle. It's just prettier. P.S. I just realized that I customized the code a little bit for my websites. Therefore I highly recommend that you visit Mr. Pearson's original post for the unaltered code and also a much better explanation as to why you should use it.