Of course you get something. Luck as a secondary attribute(goes from Normal to Blessed by Lady Luck). And some times, you might get an extra turn. So yes, indirectly you get better scores at your crimes aka you get better rewards(the game money you asked for), and some times with the extra turn you can use it and get even more game money.

It just takes a while to get it, because of the code's complexity. For more information,
see this thread. If you open the voting page, click on every link, go vote, then return and continue playing, you'll get the luck within a minute or so, as Metus suggests in the link above.