Online dating service Zoosk has been building a solid business on match-making social network users, and now it has raised a $30 million fourth round of funding from Bessemer Venture Partners, with existing investors Canaan Partners and ATA Ventures participating.

The company also provides some more detail on how things have been going. Since launching two years ago, it has signed up a total of 40 million singles from 40 countries. On Facebook alone, the company’s application has 6.60 million monthly active users and 533,000 daily active users, according to AppData. It also has free-standing web and mobile sites, apps on MySpace, Bebo, Hi5, and Friendster, and integration with other services like Netflix and Last.fm.

In terms of revenue, it “hit a $30 million run rate based on revenue booked for the sale of Premium Memberships, millions of transactions in Zoosk‘s virtual economy, and advertising,” according to the press release. Users can buy Zoosk’s virtual currency in order to do things like  buy virtual gifts for each other and access certain features.

Its previous funding rounds totaled $10.5 million, with a previous round of $6 million coming this past June. The new, much larger round will go to “support the company’s rapidly growing user base, continued global expansion, marketing activities in key geographies, and investments in new features and applications,” according to the company.