FreeBSD is very well documented (The manual is awesome) and it has a great community. There are a lot of good discussions on the mailing list, and it doesn't require you to be a kernel hacker to participate. I use both Linux and FreeBSD, they both have their strength and weaknesses. I slightly prefer FreeBSD, as I feel its easier to turn it inside out(for hacking).
Btw. Poul-Henning Kamp tweeted this a few days ago.
Between FreeBSD, Varnish and Ngnix, at least 2 out of 3 packets on the net are delivered by #BSD licensed open source software. #EatThatRMS
So I would say, FreeBSD is a lot more interesting today, than 10 years ago.