I don´t have bter points ...
If you do a little day trading points build up fast. Just don't make any withdrawals or all the bter points will be deducted from your account. Vote first! =) And when you do wish to withdraw, doing so after you use up the points is not a problem. You can withdraw with zero points without any kind of penalty.
I spent my bter points to buy votes, but now I'm thinking it was better to keep them for receiving free-votes every hour and to use them instead. I would have up-voted more at the moment.