I have used gotomeeting for TSLAC training and the programs used by WebJunction and OCLC for training. We haven't implemented this type of tool for our patrons. I have referred a couple of patrons to free webinars about grant writing.
I love this way of accessing training. So much more effective way of retaining new information. I have revisited several of the archived webinars on the TSLAC sight to get clarification when I get stuck on a project.