FireFox allows you to block certain images that you do not want to view, let's say you don't like someone's avatar. You simple right click on the picture and click on AdBlock, you can get AdBlock from Firefox's Extension section.
Personally, my parents always go by my room so I just block certain images from sites that I like to visit.
You can't expect others to make everything to your perfect condition, you have to do it yourself
and also.. people please do not insult Islam. I respect your need for seeing attractive celebrity's behinds and I believe in return, you guys should respect mine and a thousand of other's religion.
and once more, this is all just my opinion, we have complete Freedom of Speech here, so you can disagree or agree with whatever I say.