That's the cool thing, it got its first users without any promotion what so ever. I had used it myself for a couple of months, and only after 2 months I logged into the database and saw these 7 users who simply found it (maybe by URL). They not only registered but were actually using it in the same was as I did.
After that, did post it on some forums, and on the IPTV subreddit, which did give it a boost.
But I have not been posting it anywhere for the last few months now, it seems that the steady flow of new users just keeps pretty constant no and the most active users are the ones who just find it through Google.