In his search for "contact grabber" classes, Jonathan Street came across one posted to the PHPClasses.org website recently, the Contact Grabber class, and decided to give it a shot and report back his findings.
I haven't tried it yet but apparently it can connect to hotmail, yahoo, gmail, orkut, rediff and myspace. It is an impressive collection of scripts. [...] Generally speaking I wouldn't have a problem with the script being included in another project. In fact I would encourage it. In this instance though there are a few problems.
He breaks it up into a few different kinds of issues: inaccuracies, updates, licensing problems, and that the author wouldn't make contact back to Jonathan about some of his problems.