Tools that I find helpful as a writer, as a geek, or what have you.
Common Errors in English Usage » Some of the most common errors we see in the English language.
Google Docs » Save your writing files here, share them with others and/or publish them to public viewing. You can log into your account and view/edit files anywhere.
Random Name Generators » Several sites to help you come up with character names, place settings, spells and effects, and more.
Thesaurus.com » Seriously, don't abuse this. Use it when you need another version of a word, not just to find an "intelligent" version of a word.
Write or Die » Want to force yourself to write something? Anything? This'll put the fear of deletion into you.