In regards to the first question, i don't know how to get all information out of BTCT but i do know how to search for it:
Use the google search on the forum and use the following query
* you use when you want it to search for everything with the name affliate X. So affliate marketing and affliate programs
OR command is used to let it search for affliate or refferal.
If you need more, read it from here
https://support.google.com/websearch/answer/2466433?hl=en