I start about 2-3. I don't do more because I don't do it just for the sake of starting a discussion. I want it to be interesting and people like it too. What about you?
I'm new so I haven't started many, but I would guess that 1 a day is probably the most i would do. As long as the responses were nice, I would be happy.
A few I guess at this point. They used to have the numbers available for you to see.. How many you started, responded to, resolved..best response..but they no longer post that under your name anymore. One feature I wish they would bring back.