There's also another reason experts caution against them: their tracking limitations.

One person was killed in a single-vehicle crash on I-70 & 18th Street Expressway just after 1:00 a.m. Thursday.

Venmo defends its "public-by-default" privacy setting, arguing it makes the app engaging. But critics say it’s an invasion of privacy or, worse, fodder for fraud.

An Air India flight from Mumbai to London on Thursday an hour before landing.