[paulsutter]

How are you able to consistently skip the lines in so many countries? I love this idea but my skepticism would prevent me from trying it.

A better explanation might help resolve that. Is it sketchy? does it involves bribes? Is it just a scam? These are the questions that will give your target customers doubts. If I knew it was legit I would always use it.

[kcorbitt]

Same question. AFAIK in the first-world countries I've flown into the line you're put in depends entirely on the passport you hold, and sometimes traveler-specific preregistration programs (e.g. Global Entry in the USA). Are you actually helping people skip lines, or just showing them the right ones to stand in?