For statistics nerds and people curious about what is popular in fandom, here's the 2016 edition of the AO3 F/F stats. It shows which fandoms have exploded in the past year, which ones have a F/F ship as their main ship, the most popular polyships and other stuff. Definitely worth a read.
I'm a bit weirded out that only 50% of Madoka Magica fics, and 28% of Sailor Moon fics are yuri (this is only for AO3 though). I'm going to assume that the rest are mostly gen stories.
Also: I found a lesbian couple in Elder Scrolls Online! I know it isn't much, but so far same-sex couples in the Elder Scrolls series had this annoying tendency to turn up dead. I love TES and its lore with all my heart but that pattern really bummed me out. These ladies survived their personal quest and the attack on their town, so that was a welcome change. I Googled for more info and among all the predictable homophobic whining, there was a list of quests involving LGBT characters in the game. There seems to be a few of them! I'm looking forward to finding the Khajit (catfolk) woman who tries to woo a lady by bringing her dead rats.