This came up after talking with a fellow ChowHounder. In a recent thread, people were giving opinions on a restaurant when they hadn't been there in over five years, and in the meantime, the restaurant actually changed its name. I just this minute saw someone commenting on a place that they hadn't been to in EIGHT years. Given the ebb and flow of the restaurant business, that seems like an eternity.
I'm just trying to see if there's any type of consensus on how recent a visit needs to be in order to still remain valid.