you don't have to log in,
you don't have to add it to your collection just to post it,
its a really quick process,
& its not your bandwidth.
nothing more to it than that. If your happy with filling upyour photobucket with a bunch of one-time, just for that joke/thread pics, than thats fine. Just letting others know there are very quick alternatives out there so you don't have to hotlink images or leech from google image searches.
I use it all the time now, and the only things I save in my photobucket are things I want to keep, like funny gifs/pics that I might re-use and avatars that I will/have use(d).
my suggestion for using tinypic was for threads like the "What are they playing" thread. not for whatever else you use your photobucket for.