I think a better photo sharing site these days is Imgur. There's no need to sign up, and you can drag and drop photos onto the page to upload them. It has some basic editing tools that are very easy to use. Then just follow step #7 of Mark's instructions to copy the code.
I started out with nothing & I've still got most of it left M60 VP160 QS8 EP350 M22 VP100 Algonquins