Trigonometry collaboration

My seniors are getting ready to start studying Trigonometry during the second semester. I thought I would try to find other classes throughout the country that are similar to mine and attempt some type of project together. One thought I had was to post a problem on my wiki and have the students from our partner school create a voicethread or sketchcast of their solutions. Then they would create a problem on their page and we would solve it in the same manner with some sort of web 2.0 tool. So... Please let me know if you have any interest in this proposal.