Is it a ‘primary or exclusive’ attraction, or will any one instance of such an attraction suffice?

Here’s a link to that 50 grand challenge. (Note: Prithvi in the comments below notes that the forums of that site are largely given over to inter-faith bickering. This link does not imply endorsement)

Many thanks to the anonymous benefactor who donated a large amount to J&M’s bandwidth bill yesterday. You know who you are. I just wish I could thank you personally.