Screen sharing tools

Paul Pival of the Distant Librarian always has useful tools and sites for virtual reference purposes.  A while back he posted a few times with links to a few screen sharing tools that I finally got around to testing.  Below are a few of the others he and I have also looked at and vetted:

• Yugma: Screen sharing service with Skype integration and free teleconferencing with archiving and shared file space.  I really like this one, having had experience with it twice (and once in front of an audience of hundreds!).
• LiveLink: Free screen sharing service
• TeamViewer: Windows-only free and for-pay screen sharing services with chat and file transfer
• DimDim: Free online meeting service
• WebHuddle: Free screen sharing service with chat
• Unyte: Free and for-pay screen sharing services (free service is limited to two people per session)

A 2006 list of screen sharing tools on Kolabora offers many more, some of which are defunct but most of which are still around.  A 2007 list of screen sharing tools from MakeUseOf offers another list.  Check them out if you're looking for more options to choose from.

I know there are other screen sharing tools out there, so if you know of some please mention them here, especially if you have had good or bad experiences with them.  Dish the dirt! :)