From Encyclopedia Dramatica
STFW is an abbreviation for "Search the Fucking Web." Often used in a forum or on LJ when a newbie asks a stupid question, often about where to find something on the internets that they could easily find out themselves in 5 seconds with a Google search.
A sample exchange might go as follows:
- Prima: i just got this new internet thingie cuz i heard it had nekkid picz of paris hilton.
- Prima: ...where can i find those picz plz????
- Secunda: Just STFW.
- Prima: WHAT
See also: RTFM