There is a growing community with quite a bit of support surrounding scala particularly for web development. Lift is well documented and in production at Foursquare which is vote of confidence. The Guardian is also switching to scala as described here http://www.infoq.com/articles/guardian_scala. Plus Twitter, Yammer and a bunch of others are also using scala for "web related" development.

Overall I think as it exists now Scala has the best community particularly around web development. Much like the Django v Rails debate try them out and see what you like.

I know personally scala is second on my list behind Ruby.