I used to, but I couldn't tell you a definite favorite. I could tell you the ones I ironically enjoy because I think they're absolutely hilarious. Those being Jeff The Killer and Slender Man, both were a part of my childhood and now I find them extremely funny.
If I were to say one that I remember pretty well fondly, it'd be Anansi's Goatman Story. I just enjoy the implications of the "monster" and the different interpretations about it. Another one I remember starting well but kinda falling flat was "1999".
Sorry if I went on for too long, these stories are all just a bit nostalgic for me. I really enjoy the development and tropes of internet horror, both because of my own childhood fascination and also because I just find the proliferation of tropes to be interesting in how they change over time.
I could probably talk for more than an hour about different childhood creepypastas, cryptids, and ghost stories. What may seem Surprising for comrades here is, although I'm not a particularly strong believer in supernatural occurrences, I absolutely adore reading the stories and conspiracies.
This is my second apology for gushing about this nonsense.