...was recently flagged as a duplicate of this older question:
Both questions are good ones, and they cover more or less the same ground. They could be seen as duplicates, or they could be seen as complimentary. (Duplication is not the terrible sin it used to be in the earlier days of Stack Exchange; this blog post has more info on that.)
Personally, I'd like to take the answers to the older question and merge them into the newer, more complete question; but I don't think it'd be a big deal if we left it alone. This is something the community hasn't really discussed all that much lately. How do we feel about duplicate questions?
Should we merge these two questions? (Someone will lose reputation if we do that.) Or should we leave it alone?