We’ll I’ll be… here I thought Dimdim (review coming soon!) was going to be my new favorite online collaboration tool, and then I find ShowDocument. ShowDocument lets you share a document, whiteboard, YouTube video — all kinds of stuff — with a very, very, very quick touch of a button. You can have up to 50 attendees.

Oh, did I mention it was completely free?

The only drawback is that it doesn’t integrate audio and video unless you use the professional version, which lists its pricing as “a flat monthly rate” and asks you to fill out a form to be contacted by sales. Not a good sign for a free or low-cost tool.

But the free version is wonderful.

Web Meeting, Document Sharing | ShowDocument.