One of the ones I really like is http://www.find70.com http://www.find70.com It's a great way to find your first customers, business partners and affiliates.

One of the ones I really like is http://www.find70.com http://www.find70.com It's a great way to find your first customers, business partners and affiliates. It's an advanced form of twitter search that let's you target accounts based on their bios and many other filters, including contact info: email/phone number, follower count, location, etc. Disclaimer: I created it. Let me know what you think.