I hear from one forum, word press is effective for successful SEO but why I can not identify.Am I right or not Could you tell me please.
There are some plugins for WP that help with SEO. But I think you can create a static html page with the same optimization as a wp site. You'd just have to do it manually without the plugins.
If you are looking for SEO plugin for wordpress ALL IN SEO is best. Also there are other seo plugin which will make your seo work easy.
There are a lot of plugins that can be helpful to your SEO campaign and Wordpress blog. I did a search on Google and came up with this site, Top 5 SEO Plugins for Wordpress . Hopefully this helps.
I think Platinum SEO or All in One SEO are great, but make sure to use a cache program, 301 redirect, and permalink plugins as well. They'll help you setup your link structures, web speed, and more.
Plus, do you have a sitemap and PCRobots.txt?