This obfu no longer works starting from perl 5.20 and 5.19.2. See Re: How to make warnings disappear and http://www.nntp.perl.org/group/perl.perl5.porters/2013/07/msg204205.html .
See also How to make warnings disappear.
It has a recent release
The newest release passes all its tests
Its tests have good coverage
It is of high kwalitee
It has many MetaCPAN ++s
There are no long-standing open bugs
It is pure perl (ie. no XS)
It has no/few non-core dependencies
Many other modules use it
The author is prolific
It is as generic as possible
The licence is acceptable (Artistic/GPL/BSD - delete as appropriate)
It has good reviews*
It has extensive and clear documentation
It is recommended by a Monk
Results (110 votes). Check out past polls.