Ever gifted ebay gift vouchers ?  

Hey !
I am sure you all have bought and sold on ebay .. has any body tried out the gift vouchers on ebay ? I think these vouchers can be gifted to frends , and redeemed for anything that is payable by Paypal ? Please correct me if I am wrong .
Also , is it possible to send out vouchers for any amount ? or are their restrictions ?
Any help on this from my fellow mylotters would be highly appreciated . A good friend of mine is getting married next week , and I am seriously contemplating giving him an ebay gift voucher as a gift .
I would be grateful for any info on these vouchers ..
Thanks and happy mylotting