Jaxtr, a startup that offers VoIP serivce as well as a social network, has laid off 13 of its employees and has been added to the layoff tracker. As of June 2008 the company had 35 employees (we’ve asked the company for the current count). Update: The company now has 30 full time employees.

CEO Konstantin Guericke says that the company is well positioned to weather the economic downturn, as it has not yet spent any of the $10 million Series B round it raised in June. He says that along with the company’s revenue streams and growth, the cash will be enough to sustain the for at least 18 months, and that it will continue to hire for essential positions like web developers and system administrators.