LinkedIn now valued at $2.26bn

While Facebook hogs the social networking limelight, LinkedIn has been quietly and effectively expanding its audience and building revenues. Photo by smi23le on Flickr. Some rights reserved Bloomberg says today that a $20m investment by the Tiger Global Management hedge fund now values the professional social networking site at $2.26bn. Tiger Global's investment gives it a 1% stake and a low risk, pre-IPO investment that they will probably trade up, said Ted Hollifield of law firm Dorsey & Whitney . There's no date yet for the LinkedIn IPO, but it is expected soon.