I heard about this free web-conferencing solution from DimDim a while ago, but only got around to trying it out this week. And I'm very impressed. It was very easy to set up an account and starting and joining a meeting were a breeze. No hiccups at all on both my new Vista and ancient XP machines. The system spotted I had a webcam and smoothly fired this up, which also gave me a microphone to carry the audio portion of my session.
The screen was well laid out, with a large chat window to the right and the list of attendees and resources to be shared on the left, above the feed from my webcam. I particularly liked how private one-to-one chats took place in a separate window, so no risk - as with other tools - of accidentally sharing a private comment.
I was able to easily post up a white-board and annotating it - whilst very like the interface within Adobe Connect Pro - seemed much easier and was very responsive. You can also show PowerPoint slides, but no other file formats. I could pass control over to a participant and they could continue to share the white-board that I'd started. If everyone was using some form of Voice Over IP (VoIP), then the audio controls for speaking and muting lines - even offering a hands-free option - were extremely intuitive and simple to use.
There is no need to download a plug-in either (unless you want to share your desktop), which made the whole process much better than with some other services.
You can have up to 20 people in the room with the free version, more than enough space if you're looking to deliver an interactive training webinar and much more than many other free services.
The only draw-back for a European audience is the fact that the "free" integrated teleconferencing service uses a US land-line telephone number. Unless you have access to another teleconferencing service that you can run alongside the web-session (such as PowWowNow), then you are limited to using VoIP, which is still not that popular this side of The Pond, or within corporate firewalls. You can also record your sessions - even with the free version, although I've not tried that out yet.
But that aside, this is a great way to get familiarised with using web-conferencing technology in your learning strategy.
You can also upgrade for a paid-for version that adds in two-way video calls, as well as allowing more people in the room.