Answering specific to your question about, "without actively sending customers to your competitors site?", I am not sure if we can get the visitor data from the

Answering specific to your question about, "without actively sending customers to your competitors site?", I am not sure if we can get the visitor data from the organic visitors to the original site in any way. So, I guess, a little bit of third party promotion (say via Digg,Stumbleupon) will be required although you will be doing a favor to competition that way.