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2.
In my personal opinion.
IMPO, this is a cool site.
by stopnlisten July 25, 2005
 
1.
1) In my personal opinion - the personal part really isn't necessary, but this is what it most likely means.

2) In my professional opinion - very ironic, considering someone giving a professional opinion would most likely not use any lazy abbreviations.
1) IMPO, that band is the best!

2) IMPO, I think we are looking at a hippie jam fest of a size we've never seen...
by Nickguin April 04, 2008