RegionalHelpWanted.com, a network of about 350 geographically focused online job boards, has been bought out by OnTargetJobs.com, a Texas-based recruitment-site aggregator. RHW, launched in 1999 and based in Poughkeepsie, N.Y., operates its sites under the “...HelpWanted.com” brand in U.S. and the “...JobShop.com” brand in Canada, and also owns dating site Cupid.com.  Its revenue was estimated at $35 million annually, according to a Classified Intelligence e-mail alerts (not available online), who also reported the $100 million figure (not disclosed by the companies themselves).

OnTargetJobs.com is part owned by PE firm Warburg Pincus, operates sites such as HealthECareers Network and BioSpace.com, a news and recruitment site for the pharma industries. It also operates local recruitment sites for the American City Business Journals.

This was the second recent major acquisition of a group of niche sites the last month or so. In January, Monster paid $61 million for AffinityLabs, a much smaller company that operated seven niche recruitment sites and industry portals.

More in release here.