[imported_Rabbi Samild]

Hm that kind of gave me an idea. Not about stupid coins or anything but a pvm kill book. It could track your monster kills.
Maybe I am getting ahead of myself but, we could use it for pvm events. Like once a month we could say "help keep the goblin population under control" and and the books would keep track of the kills so at the end of the month we could just see who the winner is.
Be cool if we could have a scoreboard added on the site too, displaying the person who has killed the most mobs. Which could receive a reward too.

I played on a shard that had a tracking system like this... totally awesome. Kill book is a great idea. It would track only monsters you've killed, but would list the #. Awesome.

Forget coins, just assign a value for each mob like Samurai suggested, that's a great combination.