in reply to
Identifying Files with Similar Names
There are a lot of other algorithms to check for similarity which might help you, e.g the Levenshtein-distance.
A related implementation on CPAN is Text::Levenshtein.
The same name on every site (unless it is taken already)
A different name for every site
The same name for sites I don't care about, but different names on sites I do care about
Different names for sites I don't care about, but the same name on sites I do care about
The anonymous account
Someone else's username
Root, after hacking into the site
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