I am interested in exploring a bit of the darknet, and I was wondering about the feasibility of running a Tor exit node from behind a local proxy like Burp Suite so that I could ID the destination URLs and look for hidden services, this could let me essentially develop the seed list for a "search engine" for the darknet. The only problem I'm having is that although I can route my own browsing through Burp Suite I can't get the traffic from the node running through it. Any ideas?
Edit: Also of interest is the same question for the general internet. I know there was the case where a guy was questioned for doing it. And disclaimer: I don't want to actually steal people's info or release it, more of a curiosity.