Just can't have too many threads on this subject. At least this one is a question as opposed to a demand.
To be fair, at least this one is also asking about a value under 1MB as well. All the others are either asking for the full megabyte, or trying to urge us to hardfork to > 1MB. It also made me realize that only ~50% of the network is doing blocks over 250KB apparently. I thought more pools had at the very least moved to 400-600, if not the full meg.
Supply and demand should be the regulating factor in block size.
If everyone increases their block size to the max then the supply of block space is devalued.
Demand should be gauged by the amount of transactions fee's people are willing to pay to get their transaction processed and not by demanding that pools increase the size of their blocks so that they can have a free ride.
Still the last 7 blocks only had two over the 250k default and most of the remainder where way under 250k. So it seems to me that there is plenty of block space available for transactions right now.