We are told on a daily basis that we should only award personal karma to others that write a good post, present a good idea, etc on the forums. Karma "whoring" is frowned upon. I have no problem with this, but I believe that a lot of the new karma millionaires are from the bookie forum and lotteries. Both these venues are just a short cut to increasing your karmic power more quickly (like "whoring", but on a much larger scale), and they are a large part of the reason we're facing karmic inflation.
I find it odd that we are told to only give personal karma to the deserving, while at the same time being told that we can bet all of it on a sporting event.