Honestly? I'm not sure why you would really need to. Naturally, there are a couple features of each that set them apart from the rest, but they aren't really needed. With MySpace, one can create slideshows of all of your images or just certain folders. There's a lot of tailoring that can be done to the slideshow, as well. The main thing to get out of this article, if nothing else, is that you DO NOT have to host your images elsewhere to display them on MySpace or wherever!
MySpace photo albums can be set to private, friends only, or me (which means only you get to see the contents). You'll have a link off to the right-hand side that allows you to either link to or embed in an email or comment that particular image. So, MySpace IS your image hoster now. No need to create new accounts elsewhere or having to subscribe because your image is popular and sucking up a lot of bandwidth.
MySpace doesn't appear to have any particular restrictions, at least none that are inhibiting, to what size or type of image you can upload. Their terms of service does prohibit pictures that are inappropriate for the viewing by the general audience, if you know what I mean.
I invite you to go ahead and check out the powerful features of the MySpace photo albums! Go ahead, take a look...