I'm investigating Xenforo, IP.board, and Wotlab and like a lot of things about each one. I have realized that extendability is extremely important. One of the things I want to do is to write an extension that creates a link that would create a new thread in a specifric sub-forum with a specific pre-filled subject header and ideally it has pre-filled body text as well. How easy is this to do in Xenforo and can it be done at all? Could you possibly recommend any links on info about modifying and extended your software.