As Mail has DMI for tagging and etc. to Notes. I would think it would be great to have the same "functionality" for iChat.

I'm just in the process of 'trying out' Daylight for our business.

Whether it was a part of the core program or a plugin, this is the one thing that would have me sold immediately, and I'd buy the software in a moment.

I would ideally like it to be not for ichat, but for one of the multi protocol chat clients, like adium or fire, though.