Sorting by fandom first is generally a given, but after that I prefer sorting recs by author or by theme (time travel, fork in the road AU, crack taken seriously, etc.) more than by pairing since I lean away from having specific OTPs. If I like the writing in one story, then there's a decent chance that I'll like other stories by the same author. Details about pairings and story length tend to be included in the rec itself.