(In my experience, the "food" tax exemption does not apply to restaurants.)
I agree that taxing the "essentials" is a bad approach. South Carolina even has "Tax Holidays" near the beginning of the school year when certain other items are not taxed in order to make preparing for school a little more affordable. (These "other items" include computers.)
This is a much more difficult problem than it seems at first glance. Some other posters have already pointed out the problem of the "jury of your peers" concept with the example of the country Turkey. A similar problem arises if it is simply approached as "what is considered offensive in the host country" (in this case, the USA, since Facebook is based in the USA). Heck, there are pictures of my daughter in her soccer uniform that would be banned in Saudi Arabia because you can see her knees, never mind her ankles. Scandalous!
It is difficult to conform to all nations' "sensibilities" with regard to what is "inappropriate" without falling to the harshest restrictions, such as Sharia law or the Thai ban on any criticism of the Thai royal family.
Spotted Kangaroo (message 35830238 in this thread) has an interesting idea with using "trustworthy" members. I'm not sure how that "trustworthyness" would be calculated other than using a metamoderation system similar to Slashdot's. By using supposedly trustworthy members, and then allowing the Facebook staff to "metamoderate", especially in the instance of appeals against complaints, I think it could work reasonably well. It would take a while and considerable effort for shill accounts to build up enough "trustworthyness" to be able to have any impact since the shill accounts would have to show activity and not just longevity.
I like the "jury" system, though. It's better than letting people comment only on topics about which they have strong feelings. Given the large number of churches that use Facebook as the electronic bulletin board for their youth groups, I could see a disproportionate number of people moderating pro GLBT groups and pages down because it offends their beliefs. We need a random selection mechanism that still works fairly, such as trusting people to list languages understood honestly. I'd be useless in moderating a page in Turkish, for example.
Just a few thoughts. I hope that if someone notices a flaw in my reasoning that you could post a polite explaination of the flaw and propose a better solution. I'm not interested in the $100, so I thought I'd just toss a few ideas out for folks to use.
"Ninety percent of baseball is half mental." -- Yogi Berra