Why are people into lists of n random things? This seems to be a fad in Facebook, and in sites like Listverse, or Oddee.
Paul Graham does a wonderful job of explaining why "n random things" lists are popular, and I agree - it's easier to read (and if there's a point you don't like then you just skip), it's easier/more relaxing to write. Paul expresses these points in a rather amusing way, and much more.
Check his blog out - it's definitely worth a read!