Hey guys. I've been doing a bit of research into the problem of multiple points on the map, and it seems to be a very common problem. A lot of people on the mapquest forum have complained of similar issues (mostly related to route mapping), but nobody seems to have come up with a direct solution. An alternative for us would be to have events listed on a short list, with a "get more events" option. I think I can arrange it so that it will start by displaying the nearest events.
I think that we can also separate venue locations and still have the popup balloons show all of the events at a venue. This should expand the number of events we can show, as the map is currently treating each event as a separate map location. I'm currently working on this, but don't have a protoype ready for viewing yet.