Search engine Blekko, which is so stealthy it doesn’t have a public Web site yet, has raised a second round of funding of $3 million, TechCrunch reported.

Blekko was founded by Rich Skrenta, who founded news aggregation site Topix and co-founded Netscape’s Open Directory Project.

Last year, Blekko raised $2 million from Baseline Ventures and two ex-Googlers. They joined in this round, along with Netscape co-founder Marc Andreessen, SoftTech VC and Western Technology Investment.