To best serve that purpose it would be nice if we could avoid discussions and instead just share the personal background - and experiences with the languages we actually use: Where are you coming from (programmer / new to programming, which languages have you used before using Unity etc.), which languages are you working with in Unity, what do you enjoy about using these languages in Unity, what do you find annoying?
Tips and tricks are also very welcome when they go beyond what's already in the documentation and Wiki:
Writing Scripts in C#
Script compilation (Advanced) [about script compilation order, very relevant if you mix different languages in one project]
Unify Community Wiki:
Common Scripting Pitfalls
I think that one relevant aspect to this is also how much know-how is available for each language on the forums - that's why I've added the poll. For some people, this will not play a role - but for others it may be important to know and currently we only have guesses. Note that this explicitely is about "how many active forum members use language X" - not about how many people use language X in general.
Actually, I wanted to post this into "Scripting" as it's directly related to scripting - but I can't create polls in Scripting so I posted to "Gossip" instead. Could someone move this, maybe?
The first capture in the archive was Oct 1st, 2010 - about 1 1/2 years after the poll originally was started. Here's the results from back then (299 voters):
So let's move one year into the future - sample from Oct 11th, 2011 (453 voters):
Another year into the future - sample from August 31st, 2012 (so it's not a full year - but that's the data I have), 583 voters:
So let's move almost another year into the future - July 18th, 2013, 763 voters: