Campfire is a web-based real-time chat service for business use. Campfire advertises itself as a solution superior to IM in a number of ways, including permanent URLs for every chat (no fiddling with invites), reliable web-based file transfers, transcript searching, SSL security, and of course the ability to use it in any browser. Campfire is a subscription service that costs between $12 and $49/mo. depending on how many rooms you're going to use and how many people you want to chat with.