I'm not too concerned on Imgur, they usually upload to whatever resolution your photo is (which can pose a problem, high quality photos end up taking a lot of screen space if you insert an image uploaded from imgur to a post in 2ahawaii). Basically a free image sharing website, home of endless memes, user friendly, or otherwise you'd have to really screw up and get your account banned like uploading X rated stuff and sharing it without marking it as "mature".
But at least for anyone wondering about what other options to source images from other than photobucket, Imgur is good to go.
Occasionally someone shares gun stuff to the community and it gains a lot of upvotes (likes), granted if you give entertaining information or whatever. So yeah, imgur is safe to use.