Mostly I clean up articles, fix grammar, revert vandalism.

Languages
enThis user is a native speaker of the English language.
la-5Hic usor professio latine loquitur atque contribuere potest.
it-2Quest'utente può contribuire con un livello intermedio di italiano.
Other
CWRUThis user attends or attended Case Western Reserve University.
progThis user is a programmer.
Java-5This user is a professional Java programmer.
C-2This user is an intermediate C programmer.
C++-2This user is an intermediate C++ programmer.