Harmonicaboogie.com
You of course have the "Share" portion of BluesHarmonica.com to share your recordings with fellow students, but here's another avenue to interact with harmonica enthusiasts...
"We have been running this jam online since 2001, for 14 years. The way it works is some folks write backing tracks, the players download and play to them. The player uploads the track with harmonica, and then everyone listens, votes and comments. This is basically a 'woodshedding' site, a practice site to make practicing at home more fun. Practice is more fun when you know other people will be listening to your efforts. Each jam lasts about 6 months, and you can join at any time. We often have hundreds of backing tracks pass through a single jam. Playing to an audience, even an online audience, is highly motivating and can make practice exciting. We play all genres of music: blues, jazz, country ... mixed genres that have no name. It's all fun to us. So come on in and grab a harp!"
Harmonicaboogie.com Best of 2001-2012
http://www.youtube.com/watch?v=ryU8Hku_7Eg