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why it's a good idea to answer forum questions

A lot of people use google and forums to figure out technical programming questions, but we are often too lazy to answer people's queries even if we knew the answer. Well today I had a question on how to close window from GWT and by instinct headed to google only to find a reply:
http://markmail.org/message/qqr3r7ji6hl7k5vp#query:+page:1+mid:insr656lelc5kebx+state:results
that I happened to post myself 3 years ago!

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