What types of community building activities are out there to strengthen an online community ... contests, live chat, get togethers, etc?
You know, contests really worked for me. I should have mentioned that in the other topic you have on traffic-building.
Anyway, I did a bounty -- $1 per magazine entered into my database. I ended up paying out hundreds. People really went for it. Then I did a few contests, and people really went for that, too. For me, each contest drew in maybe 50 members. I kept the payouts for each contest down to $150 or so. I usually tried to spread the wealth -- $100 grand prize, and $10 to each of 5 runners-up.
I plan to do an art contest on one of my sites in January. I expect that to bring in only maybe 10 to 30 artists, but I'll be happy to have them.
I think get-togethers are a great option, but only really viable when a community gets about as big as DaniWeb. My sites are still small enough that only a person or three would show up.
I find certain moderators can dramatically improve or destroy a community, and quickly.
-Tony