Until some time recently a search at MSN only went up to 250 results displayed. For example, if you searched on "web" you would get up to 250 listed results, and nothing beyond that. Today, if you search on a phrase that yields more than 1,000 results you can go as far as the first 1031 results.
I can't find it, but I am pretty sure that the explanation used in the past by MSN for only showing 250 result was that no one goes beyond 250. I guess no one goes beyond 1031?
Forum discussion at Search Engine Watch Forums.