I use this app because it lets you copy and paste conversations with the poster's name at the beginning, unlike iChat by default. If you rename the program (I called it iChat Log Viewer), you don't have to think about its "unfortunate" name.

This is very handy and free. It has been crucial a few times when dealing with work stuff, where I needed to quickly track down info from a previous chat(s). Also, FYI, it will display images that were included and all URLs and emails are appopriately rendered as links. And that lovely name... ;-P

Unforunate name, decent app though.

I love this little app. I've been using it since Panther and have never looked back. Spotlight can search your iChat logs but not as effeciently. And Chax has a built in search but it is not as accurate as Logorrhea is.