Patent for lists stored in databases?

suresk writes: "It appears Channel Intelligence is suing website operators for infringing on Patent 6,917,941 — allowing users to store lists of things in a database. The defendants are all very small businesses, less able to fight back against the questionable patent, including the operator of an open source project for managing lists. On an interesting note — the patent was filed in 2001, so one would assume that finding prior art would be fairly easy."