How should I react to getting a fan?

thats up to 你 really..
now that we have a 墙 i think its okay to say "thanks for being a fan" but i PERSONALLY feel thats a bit forced and meaningless. i see people saying "thx 4 the add" and that takes less than 2 秒 to type and i dont feel it really says anything. its different for people 你 have interacted with- maybe they left a nice 评论 on your submission 或者 sent 你 a prop!? then i think its nice to say something on their wall.
NEVER give 支持 for being a fan..grrrrr it makes 支持 meaningless.

as for fanning them back- some people automatically 粉丝 你 back, some dont, some just 粉丝 in hopes of 你 adding them back because they feel a high fancount means something. let me tell 你 it doesnt!
I am INCREDIBLY AWESOME....SUPER MEGA AWESOME and yet i dont have a lot of 粉丝 (or 奖章 for that matter...but still *points at self* AWESOME)

so it is your choice really. personally i will add people who i have interacted with 或者 who like a lot of the same stuff i do.
if they type lyk dis 4 sho i wont add them- no matter how nice they seem. if i see they are a member of only twilight, bieber, 随意 spot and other stuff i dont care for, i will not add them.

你 seem sane and are on the etiquette spot AND type well (sheesh 你 added apostrophes and capitals!!!!! go you!!!) so i would 粉丝 你 back!

你 should also consider that if 你 like to filter your 墙 或者 chat (is the chat still even there? its always turned off) 或者 like looking at scores on 测验 the 粉丝 你 see are the people "youre a 粉丝 of" so 你 might want to be choosy :P