I'm currently using Dropbox to host a variety of things, including images. Uploading is super easy because you just have to save the file in a particular folder on your computer and Dropbox will automatically upload it for you. :)
One tip if you're going to use Dropbox: if you want things to be visible to others while you're offline, they have to be inside the "Public" folder. If you put them in a folder outside the "Public" one; they'll be visible when you're online and invisible when you're off. (I'm mentioning this because it took me an embarrassingly long time--like, several days--to figure out that that was what was causing issues with my images. XD)
no subject
One tip if you're going to use Dropbox: if you want things to be visible to others while you're offline, they have to be inside the "Public" folder. If you put them in a folder outside the "Public" one; they'll be visible when you're online and invisible when you're off.
(I'm mentioning this because it took me an embarrassingly long time--like, several days--to figure out that that was what was causing issues with my images. XD)