What do you do when passing someone on your Friend's List that you barely know?

[Sakuraluna]

Maybe wave or something, depends on my mood.

[Stitches1974]

I delete them from my FL.

I'm very specific with my friend list, I need to know exactly who someone is, and put them in one of the 5 or 6 categories available, and don't want any random strangers on it.
At the same time, I don't want to be rude and flatout refuse when someone sends me a friend request after a nice chat or duty together, so I accept (while planning to delete them later).
But because I don't always instantly think about that the next day, every few days 10-15 names without any association and who I don't remember gather at the bottom of my list.
So when I run upon an orange name that is unfamiliar, it's a great opportunity to remind me to delete them

Exactly the way I am. If you send a friend request and don't make any sort of contact afterwards, they get removed after a few days.

[Leep]

I have no friends.

[Lissandra]

I ignore them. They ignore me too, so hey.

And then eventually I remove them off my FL.

[KiraCifer]

normally give then a wave or someone who got a guess can say thing with we do that like me and this one we pet each other whenever we see the other.

[BubblyBoar]

/wave and keep doing what I'm doing.

[Enyalios]

I comment on the weather, cos it's the English thing to do

[Fredco191]

I que up for something and ignore them.

[Nixxe]

I add anyone who adds me, but I don't talk to or interact with my friend list now that my friends from WoW quit.