Joe accepts tips via Pay Pal for these reasons:
#1 - If you download a free game and enjoy it, then you may tip me what you think it's worth.
#2 - If you play my Clutter games and want to tip me for that, then that's ok too.
If you leave me a small gratuity, I won't refuse it. It will make my day but I appreciate nice reviews, wherever you play Clutter, just as much.