Free web presentation service, similar to WebEx

WebEx™ is a great service, and you've probably either hosted a session with it yourself, or used it as a meeting participant. However, even the lowest cost plans are $39 to $59 monthly, or 33 cents a minute per meeting participant.  The most common use of this kind of software is to share a presentation with a number of remote participants, with the meeting leader controlling the presentation. I ran across a great service that's very similar to WebEx, and it's free provided the following apply to you:

• No more than 10 participants in any single meeting
• You don't mind a few banner advertisements for the partipants

It worked great, and even figured out how to punch through my company's firewall. And, if you need more than 10 participants, or don't want the ads, the upgrade to their plus or professional levels is much cheaper than WebEx, at $6.95 to $13.95 a month. See their website for more details.