Tattle is like every other snark site (from GOMI to the reddit sub that snarks on Mumsnet)
I hink it starts off as a bit of fun, letting off steam about a vapid sleb who annoys you...
Then suddenly you find you're a full-on obsessive bunnyboilerish fulltime hatey hater, obsessively refreshing their socials and pouncing on every thing they said or did...
It's not very healthy really.