If I am away on vacation, I can usually get on to the Internet about once a week. Therefore, creating Ponds with 7 day time limits makes a lot of sense to me. There is nothing more frustrating than having to drop out of a Pond because you cannot get on-line.
If we had enough 7 day Ponds, then they would pop up with the same frequency as 1 day Ponds!
What do you guys think?