I've thought about it, but the code is shit. Cleaning it up would not take much time, but I'm very busy with like a thousand different projects. This is an old version of the Nuuton crawler (V0.2, I think), and is way buggy. And its overly complicated being that it was a crawling/aggregating system for a search engine. I would re-write it in Python (like I did with Nuuton), and take off all the crap. Use something like Scrappy to make development easier.
Though I wish I could do it with someone else (a co-founder, if you will). This sort of thing could make a lot of money in the right markets. They do exist already, but most are antiquated. The advantage that I have is that I do my own email campaigns. So the emails that get sent out are actually A/B tested for performance.
I do plan to offer the actual emails that I sent to get clients for around $20 soon. Its an easy way for freelancers to get clients without much hassles. If you are interested, then shoot me an email.