I just notice that forum for the first time, and I went to the IRC channel to
see if someone there knew what it was all about, and after reading a topic
from aliasbody there in the troll hole, I came to the conclusion that is
probably a place were you can post a topic that you consider will cause some
trolling or just a place where you can troll if you feel like it.
If you don't know what a troll in the Internet is, I suggest you look for the
term on your favourite Internet search engine, although I think it means
something different depending on the situation and your own definition:
For instance aliasbody's topic post:
https://trisquel.info/es/forum/there-problem-free-software-foundation
He claims that his topic could be trolling because it may cause point less
controversy. In my opinion his post is not trolling, because he did believe
he had some background to support his statement in opposition to what a troll
would do.