Never!
I made an account there two months ago, because my irl friends literally begged to me to make one xD
Well, I'm not much into sharing anything or updating status, I didn't even used my real name, nor my real pic,
and only my irl friends and some MT friends knows my identity there, I don't accept friend requests of strangers,
nor I play anything, just for the sake of chatting with few friends, because I don't really pick up my phone, when
they call me because I always forgot where I placed my phone. lol.
Now, there are many apps that can serve the same purpose of connecting with distant friends like Line, Whatsapp etc....
but I'm not there.
My main account on whole internet is on MT <3
Because I like the people of MT more than any community. MT has one of best policy (on FB it's not rare to see
"WTF" "GTFO" and "F**k" like abuse words added in comments) over whole internet
imo.
TBH, I don't like that site much, I wasn't on favor to make account there but just for my friends' sake I
did, even the white layout hurts my eyes a lot.
My privacy is very tight, and I don't do much other than chatting with my old school friends.