Well, if I count everything that I haven't given up on yet. I'm currently in 25... Most of them 1x1s, some with the same partner. And admittedly quite a few of them are threads on a single world site, so they aren't long and involved. 

If I count only the ones that are definitely active right now, it goes right down to 11. Which is sad. :( 

Two are in the plotting stage, and most are at a slow post frequency because rl is demanding.