Dimdim is a cool web meeting and conferencing solution which comes with a decent free option and pro features.

It lets you share...

• videos,
• presentations,
• whiteboards,
• webpages

...with up to 20 people for free, and the best thing is that you don’t need to download any software.

It’s easy to use and you can sign up and start using it right away at http://www.dimdim.com/.