Multi-species pictures?

I've seen a few of these going around and i'm just wondering if its something that is generally okay or something most people don't agree on.

I've never considered ever having my balls and boas mix even though i've had them quarantined and proven safe from anything visible, but yet even with the risk of unknown things going on that aren't visible people mix for pictures.

I'm just curious if there are procedures or if its just a 'take a chance' scenario?

When you say "I'm just curious if there are procedures," what exactly do you have in mind? If all of your snakes are healthy and disease free, then I don't see a problem with it (assuming that you don't have any kings that would try to eat your other snakes).

I wasn't really sure I just asked incase people did more then just take two snakes out and put them together. I never thought of it as something to do so I never looked into it.

I don't plan on doing it, as I don't wish to risk possible aggression I just wasn't sure if it was something that there were precautions that people took before putting the two species together.