Is there a way telling us whether our site is fully SEO? I've try a lot of ways, but still cannot tell whether my site is fully optimize or not, please comment if you know how. Thanks
Are you using any CMS for that? You need to work hard on SEO, know about the importance of meta tags and h1-h6 tags and <b> tag. On page optimization is very important.
I would recommend the SEO Quake plugin for Firefox. Start taking a look at the number of incoming links, the PR of various pages on your site, as well as what percentage of your site's pages are getting indexed. Also use it to do a little competitor research and see where your competitors are getting their links from.
The way of telling the effectiveness of SEO is by looking at your search engine results. What is the position your site is coming up in for your keywords?