I love this thread. I had avoided Yahoogroups because of the nonsense in the old days. Now that they've streamlined it I've got the best of both worlds.
Reason being I have 'fans' and 'rubberneckers'. Some fans have huge Yahoogroups and ask me to post stuff. What I did that was successful was to post 'serialized' toons. Toons that had that cliffhanger. It's gotta lead back to your paysite or 'via' ( i.e. sponsors etc. ).
Tease is the successful thing here. Use it to your advantage. I'm actually whipping up more serialized toons for my groups.
Here's one that always works:
Great advice on this thread. Hope I've contributed.