100% it could be used for dodgyness and whilst I wouldn't call my mates here dodgy a lot of them are 20-25 year old single country lads on the sniff.
True story though I know one mate whose now married and the whole relationship started from a 'coincidental' meeting at a nightclub. He never had the balls to ask her out on a date or whether she would want to party with him. He knew what club she was at one night so went there with some friends and did the old 'accidental bump into each other' thing. With a few beers into him and her he had the courage to have a crack and was successful. Now married with 2 kids.
Funnily enough to this day she doesn't know there relationship started from an accidental/deliberate encounter.

I agree though snapchat locations is so dodgy, mine is switched off. Guaranteed tonight at footy training a few blokes will look up someone who isn't at training to try and workout why their not there or whether their excuse is real.