Lots of very useful tools. The page adjusts to the resolution, a good feature.
Two points I can think of. One is the header, the Google advertisement besides the logo in the center could end up looking like the logo especially since it is set to only show image advts. Your logo should stand out more clearly. Secondly you could think of cutting the content on the page, ex. put the section under "Useful Information on
SEO" on a new page and add the link to the page.
Lastly, being an
SEO site, don't you think the page needs to be ranked higher? :-)