San Francisco - TokBox, a Web-based video communication service, announced on Thursday that it has closed a $10 million second round of venture capital financing, led by Bain Capital Ventures.

Mountain View, Calif. - LinkedIn, the creator of an online professional network with more than 23 million members, said on Wednesday that it has secured $53 million in its fourth round of funding, which values the company at just over $1 billion. Bain Capital Ventures led the round, which also included previous investors Sequoia Capital, Greylock Partners and Bessemer Venture Partners.

New York, N.Y. - TargetSpot, a New York-based advertising marketplace specifically designed for streaming audio, has raised $8.6 million in its second round of venture capital, led by Bain Capital Ventures.

Seattle - AdReady, the provider of an online, self-service display advertising system, announced on Monday that it has raised $10 million in a new round of financing, led by Bain Capital Ventures.

Mountain View, Calif. - TheFind.com, a developer of a shopping search engine for lifestyle goods, said on Thursday that it has secured $15 million in its third round of funding, led by Bain Capital Ventures.