Why haven't I been getting the amount of lurve that I used to?

I’ve been a member for about half a year now and I used to get lurve for every Great Answer and Great Question that I got. Recently, though, I see that I don’t get lurve all the time. I check my recent GA’s and GQ’s under the Lurve box and see that I’ve gotten a couple recent ones, yet my lurve number doesn’t go up. Only about 25% of the time now do I get lurve. Why is this? Could it be an error or does Fluther not like me anymore?