While Facebook struggles to feed ads to 900 million fickle members enjoying its free services, LinkedIn is working on selling paid services to its 175 million professional participants. Its fastest growing products, accounting for more than half of the company’s revenue, turn the serious social network into a giant job mart.

“[LinkedIn] is the best tool to come out so far for recruiters,” said Glenn Newman, a headhunter for Berkeley, Calif.-based Management Recruiters, an affiliate of global recruiting firmMRINetwork.

The Place For HeadHunters

Fully 90% of recruiters use LinkedIn to seek candidates, according to a recent survey by MRINetwork. By comparison, the same study found that only 15% of recruiters use Facebook and 11% check out Twitter.

Source: ReadWriteWeb