You basically have to be the first person to post during that hour... So I'm going to be the first poster in the 10am. And the next time someone can post will be at 11AM (PST) or what ever time zone u are in.
It does not have be that exact hour... just declare you got the time and it goes on... Try to keep track of your points too...
10 am is MINE!
*edit* if this is a game already sorry I looked and did not find it so i started one