20mb block limit? Crap, that will be a problem for block chain bloat. 200mb limit seems ridiculous to me, the potential for abuse is bad enough at 20mb, 200mb is lunacy, we can't have a block chain that grows a terabyte a week. Unless I'm missing something here.
It cannot grow that much. It will only grow depending on the number of transactions per day. The growth will be the same as today,
till more and more people use Bitcoin thus creating more transactions, what they want to achieve with this is, more transactions per block thus "faster" confirms(because they can all be fit in one block).