This might clutter up your main email if you use it as your dating site email.You might also meet some creepers online and you may not want them to have your real email so that you can avoid future harassment if things start to get strange.Maybe some of your other single friends have helped you get your bearings, giving you the names of some dating apps and services to try.Getting started in the whole online dating process can be somewhat intimidating.Leave out the details, especially ones that might help a creepy stalker track you down.
A free Google Voice number can be a great go-between for those times when you want to give a girl your phone number but you don't want to give out your real number until you get to know her a lot better where your comfortable giving her your real number.
Scammers who are phishing for personal information will often ask you things like your birthday because that's what they need to steal your identity.
They may do it in a playful flirty way, but that's just their way of trying to get the information without setting off your mental alarms.
Just because asks you what your annual salary range is doesn't mean you actually have to provide that information.
This is one of those little tidbits that should be left out of just about everyone's profile.