I learned about catbox.moe recently. It's pretty great. Simple interface, uploads up to 200mb, files are kept forever, and when you upload a picture, it gives you the actual direct link to the image; not like every other image hoster that gives you a link to the "image page", then you have to right click on the image and copy the link address to actually get the direct link.

Only thing that sucks is it doesn't strip exif data from the pictures uploaded, but not a huge deal since I just use it for memes and random pics anyway.