I just posted a similar topic to the tools forum, but I figured it'd be a good idea to post it directly to this forum for feedback as well.
My company recently built a web based CRM-like tool for individuals and small businesses, with the hope that it is useful for managing "resources", or contacts that these individuals or businesses may have.
The idea is simple - you can add a person you know to the system, save notes about them, as well as their phone number or other email addresses that you may have for them. The only information about this person that is public is their name, business name, and their business phone number. This is so that when another user comes along, and tries to add that person, the system can try to prevent duplications.
The user will receive a notification via email that you have added them. If they want, they can sign up and begin setting up their profile or add contacts as they feel necessary.
The website is located at http://www.contactsquid.com . I'd love to hear your thoughts, if you think you could find this tool useful, and if not, why?