We use Adobe Connect in several ways including for holding online courses, meeting with remote employees, offering remote tech support to people in the field and also to conduct trainings and webinars. Most recently we have begun using the Vantage Point extension by Refined Data (pay) which help us manage our participants cameras and mics to improve the quality of the sessions.
Fairly easy to use, great mobile/tablet app and they host all your recordings
It's flash based which seems a bit of a concern to me - we've had issues in the past with conference line integrations to the point I advise people not to even bother with a conference line (it's an antiquated technology anyway). We're still pushing to get the ability to save our session recordings locally as MP4 files. I believe this feature is coming soon but ADOBE Is taking way too long. It should have been a basic feature from day 1.
Setting up meetings is particularly complicated compared to other tools. The UI could use an update too. It looks like late 90's version of Windows.
We looked at other options such as Zoom Meeting, GoToMeeting, Google Hangouts, Skype, Collaborate etc. But they were all either missing key features or the pricing structure was just insane.