Hello,
The forum is a great place to start learning about the plugin!
The Tip the Author extension does not really have integration with Buddypress. It cannot be displayed next to comments, but it can be associated with any post type. So any type of article, post, etc
The Tip the Author extension has special support for the DW Question and Answer plugin. This is a question/answer plugin that lets you create sites similar to StackExchange. Perhaps this is closer to what you have in mind?
with regards
P.S. I have moved your post to the forum for Tip the Author from the general discussion.