It's lame and tacky. But what are you gonna do?
On a slightly more serious note: it makes us look bad. I can imagine someone reading Think Secret for the first time today, seeing the "forum" link and seeing AppleNova for the first time, and being greeted with that.
What we might view as a one-day-only April Fool's thing (to varying degrees of appreciation), a stranger or newbie would get such a bad initial impression of this place, the folks that run it and all us swell people who inhabit it.
Not a good calling card.