Talk City — One of the best-known chat and community sites on the Web. Offers free starter membership.
Tribe.net — a service where friends help friends do everything from finding a job to sharing their favorite restaurant. Enables users to connect with people — family, school friends, co-workers — as well as join and create “Tribes” around interest areas. Users can get a friend’s recommendation for anything from a great restaurant to a gentle dentist.
The Virtual Handshake aims to be the leading resource guide for users of Web 2.0 technologies such as blogs, social network sites, virtual communities, and relationship capital management software. The site’s book, The Virtual Handshake: Opening Doors and Closing Deals Online is the manifesto; the site is the living guide to the industry. A great resource for learning more about building relationships online — for job-hunting or freelancers searching for new clients. Includes detailed reviews of online networking resources, as well as other networking tools. No cost to job-seekers.
XING — committed to powering relationships based on trust for all professional people. Based on the theory that “No two people are more than six degrees apart”, XING enables members to grow their trusted network by making their contacts’ contacts visible to them. Boasts 6 million members worldwide.
Ziggs — offers a search platform for professionals for finding people in business online. By providing an index dedicated to up-to-date businesspeople profiles, Ziggs lets you search across more than 2.6 million public profiles from more than 66,000 companies, and find the accurate information on the people you seek. With Ziggs, you can create your own profile.
ZoomInfo.com — business-information search engine, with profiles on more than 45 million people and 5 million companies. ZoomInfo delivers a single site for quick and easy access to in-depth information on industries, companies, people, products, services and jobs. Job-seekers can post/edit your free profile, which can include your professional career details, bio, education, affiliations, contact information and Web references.