I also think putting it at 1 year atleast would be far better than 1 week. The search is meant to be a search in the database, but at 1 week default it only searches such a small part, which is a bit silly imo. Especially since the threads of the last week are still visible when going to the specific forum.
I usually set it to 2 years even, since I want to see all relevant results. There are rarely any relevant in the last week, of course it also kinda depends on what you are looking for.
Ideally, it could be that it defaults to 1 year, and that the results are shown from most recent to oldest. Then they can still take the ones from the first week, but notice that there are more results in the past too.
My vote: 1 year atleast!
Greets
