Flickr is an option. It isn't as straightforward as it was before they messed around with their interface, but it can be easy if you know what to do.
1st of all... remember that in their lingo, 'posts' and 'images' are the same.
At the top of their page, you click 'New Post' and that's how you upload your photo. Once it uploads, you will see it, and you 'right click' on it, just as you would any photo on the web. Then click Copy Image Address. Just paste that into your post here using the yellowish photo icon.
Note... once you've uploaded photos, they will be found under 'Images' and in their new interface, which is hard to find. Look for the 'Use old interface button,' and you'll see your username, which you click to find 'images.'
"Images' shows you all your uploaded photos, click the one you want and from the options always choose 'Direct Link' which will be automatically copied to your clipboard to be inserted into your post here as above.
