Maybe not a photoshop, but a look-a-like:
Fez and Mark Sanzhez
When you want to post a link to a pic and have it appear as a pic, after you have hit "reply", find the icon that looks like a tree and click it. You'll get a pop-up that says, "Add an Image." Click the "From URL" tab, and paste the link in the yellow box. I uncheck the "Retrieve remote file and reference locally" box because that part doesn't work for me, but the picture displays fine.
Try and see.
NP. If I ever get a blackberry you can help explain that to me.