Helpful SEM & SEO Links

SEO Resources and Tools

Google Webmaster Tools is a free set of tools to configure and double check your site is seen in the best way by Google.
Bing Webmaster Tools is a free set of tools to configure and double check your site is seen in the best way by Bing.
Yahoo Site Explorer is a free set of tools to configure and double check your site is seen in the best way by Yahoo.

Google Insights for Search is a free search tool to assist researching related topics and keywords for a given search.
Google Search-Based Keyword + Bid Suggestions is a free tool to assist generating keywords based on actual Google search queries.
Trellian Search Term Suggestion Tool is a free keyword suggestion tool.
SEO Book Keyword Suggestions is a free keyword suggestion tool.
SEO Book Keyword List Compiler is a free tool that compiles keyword phrase possibilities from separate lists you plug in.(ex: 1, 2 & a, b, c = 1a, 1b, 1c, 2a, 2b, 2c...)
PPC Keyword Wrapper is a free tool that saves you time by pasting in a list of keywords and it spits out the same words wrapped in brackets and quotations marks.
Google Traffic Value Estimator is a free tool that estimates the value of keywords.
Microsoft Keyword Impression Forecastor is a free tool that forecasts the impression count and predicts demographic distributions of keywords. note: many phrases I tested did not produce a result... it is a very selective/finicky tool.

Google Adwords Search Rank Previewer is a free tool for checking your Adwords PPC ad live without counting as an impression and lowering your CTR.
Google Website Optimizer is a free tool for simple a/b or multivariate testing.