It's just fun. Tn the other kind of interactivity, people interact with, for example, a television program. This is something they've been trying to do for decades, and nobody's really interested. David Letterman said he went to one of those movies where the audience got to pick the ending, and he joked that he went to see the movie, not to write it. I don't want to interact with the book I'm reading.
Community is an issue here.
Genuine communities are not separated and fragmented. I've seen too many instances where an online community appears to be solid, like a little town, and then it deteriorates. It turns out that one member is a complete phoney, and another just got arrested, and one guy is really a woman. These are fake institutions. The Well is an interesting phenomenon because it pretends to be a community, but is getting slick now and is going to start falling by the wayside.