Yupp..I've noticed these trends, never really joined them though.
I don't seem to find any of these trend things very appealing. Especially if the people starting the groups advertise in General with all capitals and bad grammar. :I
Trend groups and characters are usually all the same, same character design, same group background story (If they had one), and a lot of illiteracy. Not that there's anything bad with all of this, just it isn't my type of roleplaying environment that I enjoy.
And I just find how everything is mostly the same really boring and it gets old after a while.
I've seen horse trends, fight wolf trends, characters with wings trends, werewolf trends, and a bunch more but it's early in the morning and I don't remember them all.