You can tell who a troll is (not always, sometimes regular users act like this but most of the time) when it's a new member who posts a lot of random stuff just to become a member. Also they are usually trolls when they ask for something extremely inappropriate to be put in the game.
Not really. TS4 sims are a bit over the top (ridiculous) more than TS2 sims were. I would prefer that they made the sim reactions realistic (like how a normal person would react) instead of reacting ridiculously.
It's funny because my sim could get pregnant every single time but when she tried with Alexander Goth, she never was able to get pregnant when she tried for a baby with him. I just put it in my story he had a really small d.