Rationale
=======
Given the recent rise in value there seems to be anecdotal evidence that 1 bitcoin being so high is putting off a lot of normal buyers, because they feel that putting down $400+ and only getting "1 coin", or having to buy in multiples of 1 whole coin, is too much.. only after it being explained that they can buy fractional amounts to they regain interest, apparently happening increasingly.
Straw Poll
========
6 months ago there was a straw poll on this
https://bitcointalk.org/index.php?topic=220322.0