Can anyone comment on the implications of the sub-divisibilty of bitcoins? Is it practically infinite? This would seem to be totally new territory for "currency

Can anyone comment on the implications of the sub-divisibilty of bitcoins? Is it practically infinite? This would seem to be totally new territory for "currency." It does seem to be a near perfect vehicle for pure speculation right now, and I see no reason an alternate like Litecoin couldn't join the party. It obviously already has!