Instagram..can i trust you with my personal photos?

I upload my pictures so that i can have my friends..my near and dear ones see them WITH MY CONSENT..
not some guy using one of my shots and sell them for hefty money..i dont want some random person to look at my things..common..i need something which secures all my personal stuff with myself...looks like a need of something "like instagram" has alre
ady arisen.!!