I'm going to online stalk people
Why would you try to stalk people.
I'm nosey and want to know everything about them.
It's fine to be curious about people who are interesting to you, but stalking people to is just weird and wrong. Other peoples private lives has nothing to do with you and if one of them were to find out what you were doing you could get into a lot of trouble. Just respect peoples privacy, and only inquire about things that they are willing to share.
I will do it anyways and see if they call the bluff.
I have to strongly advise against what you are doing.  Stalking in real life is a criminal offense, and even online this kind of behavior can get you banned from many platforms.  If you see someone interesting, just send them some messages and ask questions.