Fair enough, I honestly avoid Reddit for the most part myself. On second thought, it might be better off if one of your fans did any promotion of UF elsewhere. That way it would be a lot less likely to invite trolls.
As an aside, I wasn't even introduced to UF via anything on the internet. The friend who introduced me to fanfics in general told me about it back in 2001.
-------- Wedge Defense Force General Order 12: "Try to avoid freaking the mundanes."