Source: http://feeds.feedburner.com/~r/lifehacker/full/~3/394594817/turn-gmail-into-a-tagged-knowledge-base
Blogger and information junkie Steve Rubel details how he uses Gmail as a taggable, searchable knowledge base using previously mentioned tricks and tools like Gmail plus addresses, the Ubiquity Firefox extension, and Gmail Labs Quick Links. It's a fantastic system, not only because it works perfectly with apps you already live in (namely Gmail), but also because you can save and tag an entire web page in a few keystrokes. Likewise, you can access the information quickly and easily with Gmail's excellent search. I recently detailed how you can expand your brain with Evernote, a free, cross-platform note-taking application, but if you live and breath Gmail, Rubel's methods (which improve on similar Gmail solutions we've seen before) are worth a try.