The reason I suggest to do it every day is, in part, I think it would be very helpful to us from a marketing standpoint to have a real active "megathread" in the altcoin announcements. People looking for "what's hot" look in the altcoin section to see what has the most posts and activity and they look at basically only at the first page of threads that have been most recently updated.
having a daily post contest would guarantee a lot of supportive, interesting, and intelligent posts. Any one of us on this forum who also has a bitcointalk account could compete to get some free AGS if they can write something interesting and it gives us an excuse to post positive messages and ideas on bitcointalk.
The more we give out and the more often, the more interest there will be. AGS is cool because the money comes back to the general fund and it takes a little initiative and can't be dumped as easily.
We also have a limited time window to get AGS donations, about 2 months, the more people who feel like they got in on the ground floor of this I think the more solid our social consensus will be.