[landr0id]

I think that ImageShack still imposes bandwidth limits and other restraints. I can't see why anyone would use it over another service like imgur.

[tripzilch]

Depends on what you use them for. Services like ImageShack and Photobucket keep your images around, while (last time I checked, which is admittedly about a year ago) Imgur's FAQ says something about deleting old images that haven't seen any traffic for a certain timespan (at least 3 months, IIRC).

[rplnt]

Imgur has some restrictions as well. It's their (Imageshack's) "view image" pages that are horrible.

[jonknee]

Any host is going to have restrictions, but Imgur will not take your image down for bandwidth reasons.