I think the bumping is fine, but maybe quantify a reasonable timeframe like what others have suggested.
Just digressing, there is another annoying behaviour. When a topic thread is started of a particular model/celebrity, there is almost always someone who claims to have videos or photos of the person discussed, but will never share anything. Half the time, these claims are just put out there to annoy the heck out of people.
My view is that if you don't intend to share (either publicly or privately), what is the point of mentioning "yes, I have the photo of so-and-so full frontal naked", or "yes, it exists and I have it, but I won't show you or share it or even prove it with a cropped photo" etc.