Christians, what are some popular websites with a religious focus that you frequent?

I myself am not religious, however I do have a client (religious college) that I am working for, and I would like to do some research on religious specific websites. So far my search has led me to a lot of junky content, I was hoping to find something that is well put together, possibly community oriented (i.e. facebook esque), and/or contains modern christian art.

Also I would be interested in finding well put together fliers with christian imagery and christian music or christian artists websites.