This poll is very interesting to me for one reason - Python is winning the poll, yet I very rarely see/use any large web applications that are actually written in Python. I'm guessing this is partly because Python is increasing in popularity now, and the web applications being written in it haven't yet reached the wider public? Also, perhaps, a lot of small personal projects are done in Python yet don't scale out into the Gmail/Gdocs/Github style ubiquitous services?

The poll is also missing Javascript which is very strange, as it's probably still the most used language for the front end of web apps, and with Node it's probably used more regularly for the full stack, too. EDIT: Looks like Javascript was just edited into the poll now.