FreeConference.com now offers a new FREE teleconferencing screen share tool that works like a webinar. When you signup you need to choose the "FREE/Beta ScreenShare" feature.

Several people I know have used GoToMeeting.com and think it provides a very handy tool at a reasonable price. It is easy to use and easy to set up. No prescheduling required. Another easy and low-cost option is StartVisuals.com. It starts up almost instantly and is very easy to use. It has also proven to be quite reliable for a low-cost platform.

I have attended meetings on Intercall.com (they used to be named Raindance.com) and on Webex.com and found they work fine also. WebEx has the best feature set for small collaborative meetings. It doesn't take long to learn how to be productive, and impress your participants.The last time I checked, though, Intercall cost more than GoToMeeting (and Webex was way more) for the same service.

When choosing a webinar service, try each service if at all possible -- there are differences which may affect your meetings.

Tip: You will need a decent upload speed to show your desktop -- 256kb up will only work marginally, 512kb works well, 1,000kb or better is excellent for most webinar applications.

Another thing to be aware of is that using VOIP (voice over internet, such as vonage or skype) can sometimes affect the quality of webinar reception. You may experience hiccups in reception if you or your participants use VOIP.