Bonjour: What impact on network?

[ztirffritz]

I've only ever used Bonjour in my home for a handful of Macs to chat. I've been trying to set up a Jabber server at work, but haven't been having much luck. It occurred to me that Bonjour would require no configuration, but at what price? It must be sending some type of broadcast burst over the network. Would 100 PCs each using a Bonjour chat client adversely affect operations? Anyone have any experience with this?