Encino-based United Sample is reporting today that it had a triple-digit sales increase over last year, and has now has 70 team members working at the firm. Actual financial details were not announced by the startup, but the company said it is seeing rapid growth in its online panels. United Sample provides online sampling services for the market research industry. The company also said it now has over 1 million active, registered survey panelists. United Sample is venture backed by Grecroft Partners and DFJ Frontier and is the latest startup of Gregg Lavin and Matthew Dusig, who founded goZing.