Los Angeles-based online comparison shopping site PriceGrabber.com is in a deal with online privacy certification firm TRUSTe, TRUSTe said Thursday. According to TRUSTe, PriceGrabber.com will allow merchants using PriceGrabber to display their TRUSTe seal in their shopping listings. TRUSTe runs a program which allows ecommerce sites and others to show they protect and keep private user information. Financial details of the arrangement were not disclosed.