What is the best way to reward members who provide useful content? I don't want to send a rose as it can't be redeemed for anything.

Can I buy points for other people and send them to the members I have in mind? What would be a good amount? 500? I don't want anything in return (including friendship), I just want to encourage some people and thank them for their efforts.

I correct for free at Lang-8, but I'm not sure that I want to correct here yet.

I definitely recommend giving points. Then it is up to the recipient to decide how to use these points.

Sure, you can send points to other users by going to their profile and clicking "Gift Points". Here you can select how many points you want to send them and also write a personalized message. Note that you can only give points if you have points, so you'll have to purchase some points first :)

Steve and Alex,

Thank-you for the quick replies. Can I send them points through paypal?

No, your username will be attached to the points that are sent. You can send them money through PayPal if you know their PayPal address, but that's external to our system so it's up to you if you'd prefer to do that.