Online meeting host Dimdim has added a new feature that makes it easy for meeting attendees to share their screens with others. The new myScreen controller allows users to share their screen through Dimdim without needing to start a meeting, or open a browser window.

The feature works across Windows, Mac and Linux computers.

Dimdim is an upstart competitor to WebEx and GoToMeeting that competes on price. There’s a free version that supports up to 5 meeting participants. WebEx and GoToMeeting have free trial periods, but no free small-meeting services. And while both those brands’ lowest service levels cost $49 per month — 15 users max on GoToMeeting, 25 on WebEx — Dimdim supports up to 50 participants for $25 per month.

I took a demo meeting with chief marketing officer Steve Chazin between Vermont and San Francisco. We shared screens while running video chat, no problem. It worked fine in Chrome on a Mac, which I chose just to be difficult.

Dimdim was founded in March 2006 and is headquartered in Lowell, Mass. The company has raised $9 million in two rounds led by Index Ventures, Nexus Venture Partners, and Draper Richards. The company has prepared a competitive feature list against WebEx and GoToMeeting. I’m posting it in hopes it provokes a response from those companies in the comments.