I've been finding Dropbox a great way to post photos on the forum.
To those who aren't already familiar with Dropbox, it's just the greatest thing since sliced bread. You basically install it and it creates a folder on your computer called My Dropbox. Anything you store in this folder is automatically copied to a central server, so it's automatically backed up and you can then access it from any computer or smartphone, anywhere with an internet connection.
The good part, for posting photos, is you can create a public folder and you can post a link to anything you put in there, so anyone can see it.
With posting photos, I just put them in my public folder, copy the link to the clipboard, then, when posting, I click the Img tab and paste the link.
The advantage is, you keep control of the original image, so you can always go back and modify it (such as adding an extra label or whatever). Also, the image doesn't disappear over time, as it does with some photo hosting sites.
You get 2 GB of space for free. The photos are just screen shots, so they don't take up much of that space.
If anyone wants to try it, here's a link: http://db.tt/0hRRudQ
Declaration of Interest: If anyone ends up using Dropbox as a result of following that link, I get some extra free storage space, but that's not my motivation for recommending it ....... honest