Jaxtr is a way for blogs and social networking sites to offer their visitors a way to make calls to any landline phone or cell phone for free. You might think of it as bringing the old-world telecommunications idea up to Web 2.0 speed. I have seen the many VoIP solutions out there, as you have, and many of them are very good, but few have targeted the social networking sites and made a good way to integrate VoIP offerings in a social way. Since Jaxtr is in a private beta right now, I haven't yet tried the service, but the sheer idea of it is cool. My question is whether or not bloggers would want to be contacted by random website visitors via Jaxtr or not. An interesting thing about Jaxtr is that it displays a local number the first time a visitor connects so next time they can call the local number to get a hold of the person again, without having to use the Internet. They will block certain callers for you, which is priceless for any phone service, paid or not, not to mention that the Jaxtr widget can be emailed to contacts. The service currently supports Blogger, Friendster, hi5 Networks, MySpace, Tagged, and Xanga. You can sign up for the private beta, and it helps to reply to the initial email they send you with your social networking information, because they are looking for beta testers with established accounts to test out the service. If you do get into the beta to try it, let us know what you think.