I will have to say this thread is probably the only reason I joined this forum. Coupled with my love for TG, anyways.
This is an amazing thread and I hope to offer up some demotivators of my own when I get the chance.
And as for how long you should keep the spoilers up - I am a Top Gear fan, yes, but I watch the edited US TV episodes with my family. The new season doesn't come out until September for us, so I would appreciate if you guys kept the spoilers there for that long.
Yes, I know they're the diced version, but I like watching it with my family. Then watching the full version later on. It's how I roll.