http://news.mmosite.com/content/2011-09-01/cryptic_is_working_on_a_free_to_play_model_for_star_trek_online_1.shtml
Stated in a recent earnings call, Perfect World Entertainment revealed that developer Cryptic is currently working on a free-to-play model for its Star Trek Online MMO. The altered pricing structure will be put into effect alter this year.
If STO goes free to play, I might go back to it.