Boston - WordStream, a provider of search engine marketing services, on Wednesday announced its launch with $4 million in first round funding from Sigma Partners.

San Francisco - ScanCafe, a photo scanning and restoration service, said that it has raised $4 million in its second round of funding, led by Sigma Partners.

Campbell, Calif. - YouSendIt, a provider of digital content delivery services for business and personal uses, announced on Tuesday that it has raised a $14 million third round of venture capital financing, led by new investor Emergence Capital.

Redwood City, Calif. - Attributor, a provider of content-tracking and programming services for publishers, announced on Wednesday that it has raised $12 million in its third round of venture capital financing, led by JAFCO Ventures and previous investor Sigma Partners.

Las Vegas - Vlingo, a provider of voice-powered mobile phone applications, announced on Wednesday that it has raised a $20 million second round of financing, led by Yahoo (NASD: YHOO), which will also offer Vlingo's voice-powered technology on its mobile oneSearch service.

Needham, Mass. - Bus Radio, a provider of radio broadcasts targeting school buses, has raised $10 million in its second round of venture capital, according to a report in Private Equity Week.