Social networking is getting more niche, and more intelligent. Here are three new sites that bring together a sense of creativity and community.

BEHANCE - A creative collaboration site, sharing ideas, portfolios and projects, and ways to “make ideas happen.” (Visit Behance network)

BIG THINK - Big Think is a global marketplace for idea-sharing, billed as a “YouTube for ideas”. It launched this week with interviewees that include Sen. Ted Kennedy, Richard Branson, Naomi Klein, Zac Posen, and master chef Jacques Pepin. (Visit Big Think network)

DOPPLR - “A beautiful and useful tool for intelligent travellers worldwide”, this site was much anticipated at the Le Web 3 conference in Paris this week, and is already growing rapidly. (Visit Dopplr network)