Palo Alto, Calif. - Jaxtr, a provider of Internet phone services for social networks and blogs, said on Tuesday that it has raised $10 million in its second round of funding, led by new investor Lehman Brothers Venture Partners.

Millbrae, Calif. - Power Reviews, an operator of product reviews websites for corporate clients, has raised $15 million in a new round of financing, led by Lehman Brothers Venture Partners, VentureBeat reported.

San Mateo, Calif. - Tira Wireless, a provider of technology and services for mobile content publishing, announced on Monday that it has raised $5 million in its fourth round of financing, from existing investors Lehman Brothers Venture Partners, Brightspark Ventures, Flagship Ventures and Export Development Canada.

Mountain View, Calif. - Tumri, a provider of contextual online advertising services, announced on Monday that it has raised $10 million in its second round of venture capital financing, led by Lehman Brothers Venture Partners.