[Bojan Zivanovic]

http://validator.w3.org/checklink - W3C Link Checker
http://www.seotoolset.com/tools/free_tools.html - keyword popularity, to density, website scanning..
http://www.submitexpress.com/tools.html - keyword
suggestion, meta tags generation, page snooping, popularity..
http://inventory.overture.com/d/sear...ry/suggestion/ - Yahoo
(ex Overture) keyword tool
https://adwords.google.com/select/ma...KeywordSandbox - Google keyword tool
http://www.marketleap.com/publinkpop/ -- compare 4
sites, link popularity. Shows graphs, so you can monitor your site's
progress
http://tools.seobook.com/general/linkpop/