Well, in Neville/Draco's defense, I should probably add that slightly over a third of those 30 fics were by two different authors. I have noticed a definite upswing in fics with that pairing post-DH, and it's safe to say it's rapidly approaching that fuzzy middle ground where it's not a super-rare pairing, but it's not as big as, say, Harry/Ginny or Harry/Draco.