Just went to look at for some new keywords and look what they said…

Please wait a moment while we redirect your browser to the new external Keyword Tool.

The previous URL, http://adwords.google.com/select/KeywordSandbox, is no longer active. Please note that the new Keyword Tool URL for external users is now KeywordToolExternal.

You’ll be able to take advantage of Keyword Tool
features without logging into an AdWords account.

Pretty cool! :-) Matt Bacak