The site was created by a big-block "nutcase", presumably to demonstrate how the economic majority is in favor of bigger blocks. Unfortunately for him it demonstrated exactly the opposite.

Here he is advocating for increasing the blocksize limit to 8MB as soon as possible: https://bitcointalk.org/index.php?topic=1238605.msg12897706#...

And here's his post announcing the launch of the service: https://bitcointalk.org/index.php?topic=1133634

The site allows anyone to propose statements which all Bitcoin holders can then support or oppose by signing messages with their coins. The anti-small-block question wasn't written by the site owner, but is currently the most supported statement on the site.