First rule of Tumblr, don't talk about Tumblr. Seriously.
Second, Acacia's story is sort of long. She first started a tumblr account and posted racy pictures on here (of herself in her bra, underwear, you get the point). Then, she got a lot of hate on the account for posting bad pictures so she ended up deleting the account. Tumblr didn't get her fame though, it was mainly because of Sam Pottorff. He is a famous Youtuber and they started dating back then and then ended up breaking up because Acacia supposedly used Sam just to get with his best friend, Kian. She was also sending nude pictures to other guys when she was dating Sam, and this was all at a very young age. This is when people got the most angry. She got death threats daily. She still gets death threats and she probably has more haters than fans. But point is, don't do what she did just for a little Internet attention. No attention is better than negative attention. After all that happened, she started a Youtube channel for her fanbase that was created all because she dated Sam Pottorff. I guess you can basically say she's famous for dating a famous dude and because she's pretty to some people. She started making Youtube videos just talking about herself and singing and stuff like that. She isn't a good singer. She joined this girl band with 3 members but got kicked out of it. And people hate Acacia because she tries to get with every celebrity boy like the boys from 5 Seconds of Summer, One Direction, Emblem 3, Janoskians, Dylan Holland, Austin Mahone, etc. She's sort of annoying and I don't like her but this is the true story. I know this because I'm a fan of Sam Pottorff and I've sort of been there along the whole ride
And don't use Tumblr for fame. You're going to get LOTS of hate.