Hmm...

I was just thinking the same thing... interesting,,,??,,

Your earnings depend on the quantity but most of all the quality of your discussions. MyLot hasn't made clear how it is decided if a discussion is not of low-quality, but somehow they figure it out. I say just stop worrying, relax and reply or post about things you're interested to. The money will grow for sure and you will learn something new everyday, not to mention enjoy it.