WebProNews has launched a new service called Twellow, yellow pages for twitter. They are proactively monitoring twitter and capturing twitter account names and categorizing them based on the info they tweet. You can also add yourself to the listing.
The idea is that if someone is looking for companies that are tweeting about a specific product or service, lets say travel agencies that are tweeting spring break deals to the Caribbean, then people who are seeking them out in twitter can go to Twellow and look them up easier than monitoring messages based on key words or phrases and then sifting through all of the tweets to find what they are looking for.
Sound good? Would you participate based on your business model?