Yak Shaving -- [MIT AI Lab, after 2000: orig. probably from a Ren & Stimpy episode.] Any seemingly pointless activity which is actually necessary to solve a problem which solves a problem which, several levels of recursion later, solves the real problem you're working on.
#520 Font Hack -- Web site BitFontMaker lets you design, create, and download your own fonts. Using a little bitmap, you can draw your own letters and symbols to create your own custom made font. You can also you can browse through the BitFont Museum and download other people’s BitFont creations. (HT: LifeHacker)
#521 Firefox Extension -- DragAndDropUpload lets you drag and drop files into upload fields in web forms. Drop files into attachment boxes instead of having to browse for them or type in the filename. In some websites it you can upload muliple files at one time. For example, in Gmail you simply drop the files directly over the "Attach a file" link to have them added to your email. (HT: Lifehacker
#522 Gmail Hack -- Greasemonkey script Gmail Encrypt adds encryption to the emails you write in Gmail. (HT: LifeHacker)
#523 Know Your Fallacies -- Circular cause and consequence -- a logical fallacy where the consequence of the phenomenon is claimed to be its root cause. This is also known as the the chicken or the egg fallacy. (Example: "Crime is an integral phenomenon of the Capitalist society and its social injusticies. Since the Soviet Union does not have Capitalist society, they have no social injusticies and no crime either.")
#524 Google School -- To limit your search to a specific type of file, use "filetype." Type filetype:xls to find an excel file, filetype: ppt for PowerPoint, filetype: PDF for PDFs, etc.
#525 HowTo -- Write an email.
#526 Cleaning Tip -- Accidently wrote on a dry erase board with a permanent marker? Simply write over the marks with a dry erase marker and erase. Use rubbing alcohol and a towel to remove any stubborn marks that are left over. (HT: WikiHow)
#527 SoYouWanna -- Run a marathon.
#528 Photoshop Hack -- Red eye is a common problem with digital snapshots, but About.com has a detailed tutorial on how to remove red eye using any version of Photoshop that makes it easy to correct.