100% with you @istolethetalisker I hate this. I know several people who do this. If you're going to say 'are you free?' tell me why you want to know along with asking if I'm free!
I find if someone asks 'are you free?' and doesn't follow it up with a reason why they're asking, it's often something I don't really want to do, or is going to cause me inconvenience (and be time-consuming.) 'Can you babysit?' 'Can you come help me with something?' 'Can you come round?' etc... And it's often something you don't really fancy doing. It's very annoying!
DD had a habit of doing this some years ago, 'are you doing anything today?' she would text. (Around 11am,) When I said 'not much why?' she'd say 'wanna come round for a bit? I'm bored.' (It was on a Saturday when her partner was out with his mates at a footie match and no friends were free.) She has lived 20 miles away from me since leaving uni, so as much as I love her (and enjoy being with her,) it was a massive ballache to have to go at the drop of a hat. A planned visit yes. But just having to drop everything and go was a bit of a pain sometimes. Especially if I had been looking forward to a nice, sleepy, relaxing, chilled Saturday!
It was an hour and a half for the travel time alone there and back, and I'd have to get ready (20-25 minutes.) Feed the cat, leave DH a message if he's in bed, or out, or at work. Then it's probably 12.15 to 12.30pm before I get to hers, then I just sit there chatting with her for 2-3 hours and we may pop for a coffee to Starbucks. And then my day is gone.
I could have popped to the big shopping centre 2 miles from her, (after seeing her,) but because it was always a Saturday, the shopping centre was rammed and really packed, so it was hard to look around/find a parking space after I'd seen her. And even so, it would be 3-4pm before I left her so not much time to look around.
She never said 'are you free?' and offered to come to me though! Always wanted me to go to her! (Saved her doing a 40 mile round trip, but still wanted me to do it.) She doesn't do it so much now as her partner doesn't go anywhere at the weekends now, so they spend it together. (And me and DH see them once every couple of weeks at the weekend or on a weekday lunchtime.)
I wish posters would quit the 'just say NO' line. It's easier said than done in the real world.
!