MOUNTAIN VIEW, CA, June 29, According to Reuters, RockMelt, a Web browser that integrates Facebook and other social media, snared two more Silicon Valley investors in a new $30 million round of financing.

Accel Partners and Khosla Partners joined existing investor Andreesen Horowitz in this latest round, the company and investors said. Accel's Jim Breyer and Khosla's Vinod Khosla will take observer roles on RockMelt's board.

Rockmelt lets Facebook users send messages from their main browswer screens and signals when there is news a reader wants - a new Tweet or an update on a favorite website. The idea is to make the Web browser, increasingly the portal for applications as well as Web surfing, a one-stop shop for people hooked on social media.