I've discovered this with a nearby friend. When you see the glowing circle on them, that means they have used an O-Power on themselves, and you can use it too. If someone uses an O-Power on you specifically, it will just give you the power.
Are you sure they are sending them to you and you're not just piggybacking off of them using it on themselves? As far as I know, if someone uses a power on you, it takes effect automatically and you get a notice. If you get a message that "_____ is using _____", and you go to their icon and click Receive O-Power, then you are getting that power for free due to them using it for themselves.
Pretty sure you can't send these two powers, but if someone else uses them you can probably receive it for free like everything else..
PSN: Lodrak | NNID: TyrantPotato I hear Duke Nukem Forever is coming out today, Japan Time! - Singapore