On Thursday, 450 bloggers, journalists, students, scientists, librarians and programmers will converge on North Carolina State University (and thousands more will join in online) for the sixth annual ScienceOnline conference. Science is moving to a collaborative model, said Bora Zivkovic, a chronobiology blogger who is a founder of the conference, “because it works better in the current ecosystem, in the Web-connected world.”

Indeed, he said, scientists who attend the conference should not be seen as competing with one another. “Lindsay Lohan is our competitor,” he continued. “We have to get her off the screen and get science there instead.”

Facebook for Scientists?

“I want to make science more open. I want to change this,” said Ijad Madisch, 31, the Harvard-trained virologist and computer scientist behind ResearchGate, the social networking site for scientists.

Started in 2008 with few features, it was reshaped with feedback from scientists. Its membership has mushroomed to more than 1.3 million, Dr. Madisch said, and it has attracted several million dollars in venture capital from some of the original investors of Twitter, eBay and Facebook.

A year ago, ResearchGate had 12 employees. Now it has 70 and is hiring. The company, based in Berlin, is modeled after Silicon Valley startups. Lunch, drinks and fruit are free, and every employee owns part of the company.

The Web site is a sort of mash-up of Facebook, Twitter and LinkedIn, with profile pages, comments, groups, job listings, and “like” and “follow” buttons (but without baby photos, cat videos and thinly veiled self-praise). Only scientists are invited to pose and answer questions — a rule that should not be hard to enforce, with discussion threads about topics like polymerase chain reactions that only a scientist could love.