i think its rude to expect to get 50% of it back!!
if you give someone a gift of a lottery ticket then that is the deal - you are giving it to them, you know that when you buy it, and thats the whole point - that they may win - you are giving them the gift of a chance to win!!
you can't then expect to take half of it away again!
you are not saying heres a piece of paper worth only a �1 and if it doesn't win, tough sh*t, but if it does then its half mine! do you only give a gift to see what you can get out of it yourself?
I would certainly buy them a nice big gift as a thankyou, but i wouldn't feel obliged to give them half!
nor would i expect half from them.
some people would do this deliberately knowing they were only spending a pound, and the chances of winning are pretty slim.
I am actually quick shocked that you all seem to think that you deserve half of their winnings!