Yes, people play this mod on and off right now. We announce multiplayer game days on the forums so check this board from time to time. Other than that, the best place to look for a game is the IRC multiplayer channel
. Name yourself Petroph and ask about bp multi. You can also try typing in IRC /join #hard-light
You can't play in TvT games by yourself, but you should be able to play the other capship games if you installed bp multi correctly. Make sure you have files in freespace2/blueplanet2_multi/data/tables. You can also try to recheck the install directions here
I've linked some of the basic stuff on Moddb needed to play this mod online so perhaps we may get more players.
Thanks for doing that! The more, the merrier.