If you enjoy reading I suggest you give wattpad a try. If you prefer cooking, crafting or just want to get inspired you're safe with pinterest. Tumblr is for when you want to create something yourself, so if you want to start a blog, tumblr is a safe bet. If you're a gamer, that enjoys watching other people play, head over to twitch.
If I had to choose between the funny websites that I've mentioned I'd probably go with thejumblr, for it's unique approach. If you want funny compilations visit likealaugh and if you want art or spooky go to tickld.