Great idea - so many good questions already:

Do you prearrange 'all' of your meetings for facials? (obviously not, if you are in a glory hole). Outside of an inherently sexual situation, what makes your decided you want to give a stranger a blow job? have you ever done this? If so, how do you chose him, how do you approach a guy to ask to give him a blow job then and there? What is typically the reaction and how can I increase my chances of this happening?

Thanks again!