Singlesnet.com
Singlesnet.com is by far the best free service we've seen. The number of features offered is impressive and their registration is simple and quick -- not even a credit card is required.
On Singlesnet.com, it's free to contact members, view full profiles and photos, receive and read e-mails from members, reply to e-mails from members, create your own personality profile and use the compatibility matching system.
Signing up is easy. It took us only 20 seconds to create an account, thanks to their simple registration process. We were impressed with the large number of relevant matches in our area.
Service: Singlesnet.com
Our rating: 
(Excellent; 5 out of 5 stars)
The good: Loaded with features available for free; Quick signup; Easy to use
The bad: No complaints here