Sex.info didn't get sold. If you look at the Whois record it was last updated on 20 April 2006. If it got sold for the $202,000 reported that would have been updated. Travel.info sold for $116,000 and Sedo reported it as the highest .info sale in a press release. They wouldn't have done that if the domain hadn't already changed hands.
If I had $116,000, I would have bought Travel.info, it's the ultimate .info. It combines off the scale goodness of fit with the extension, the most lucrative and popular usage of .info, and a super premium keyword.
I was offered Free.info in Nov 07. I told the seller I valued it at $2,000 and he said I did the worst domain valuations he'd ever seen, presumably having been offered $42,000 elsewhere. I can understand the appeal of Free.info, 20m Google uniques for "free information" is double what Travel pulls in and everybody wants free things online.
The problem is somebody visiting Free.info is expecting something for nothing and that's the worst possible customer mindset when you are trying to convert provision of information into cash. I guess the trick is to provide a free basic service or product and then try to sell a customer an enhanced paid for version.
If I was paying big bucks for a .info, I'd rather have something specific and commercial like Mortgage.info, Debt.info, or Loan.info.