Or upload them to some image service (iphoto, tumblr, picasa, imgur, etc) and link to that.
The only real reason to host images at TFL is if you think the image is going to be taken down from those services. vbulletin can do it, but why? It's one more place you have to go to manage images. There are apps for uploading to major imagehosting services that are easier to use than uploading to TFL.
Imagine a pathologically idealistic, anti-religious, culturally-relativistic, iconoclastic, socially-irreverent, sociologically-progressive signature line here. Or don't.