![]() The New York Times very quickly sussed out the identity of one of these users, and I am sure others will follow. Also there are are a very high number of searches in which the first 7-8 results are deemed to be insufficient, and the user continues looking.ģ) “Anonymizing” web logs by using numbers of instead of user-ids does little to protect the privacy of the users. Clearly, these users are looking for something better, but just don’t quite know how to obtain it. The number one thing that AOL users type into their search box is the name of a better search engine. Percentage of users who searched for “cream pie” and actually wanted a recipe: 0.1%Ĥ274108 aol i want to change my email passwordĢ) AOL search isn’t very good. ![]() Percentage of users who searched for “cream pie”: 0.2% Interestingly, the site most indicative that a user didn’t search for porn was a savings and loan. I used a Bayesian filtering technique to come up with a list of likely keywords and sites, and then searched on users who searched for at least one of the candidate keywords or visited one of the candidate sites. ![]() This real number for this last figure may be a bit higher, since it’s difficult to suss out all the creative ways that users search for porn. Percentage of users who did at least one search for porn, or visited a porn site: 20%. Percentage of users who searched for, or landed on AOL: 13%, Myspace: 11%, EBay: 10%, Amazon: 8.2%, Flickr: 1.2%, YouTube: 0.7%. A lot of folks are landing on Yahoo hosted sites without actually searching for Yahoo. This is interesting because the number of users who actually searched for Google is about 3 times higher than Yahoo (you can see a list of the top 500 search terms here). Percentage of users who searched for, or landed on Yahoo: 18% Percentage of users who searched for, or landed on Google: 17% Assuming that my web logs only account for half the traffic, this would still indicate that the leaked AOL data represents 3.0% of all AOL search traffic during that period. The leaked data shows 30 visits to Krazydad over that period, and I actually had about about 480 visits from AOL search engines according to my web logs. My own informal test indicates the actual fraction may be higher. According to AOL spokesperson Andrew Weinstein, this represents 0.33% of the search traffic conducted through AOL over that period. The data contains search records for about 658 million users collected over a three month period from March to May 2006. SPECIAL THANKS to programmer Phil Bordelon, who helped program and debug these variations.I’ve been trawling thru the leaked AOL data with some perl scripts and came up with a few statistics. You can use the formatting option on the download page to produce foldable booklets that conserve paper and ink. My puzzles are provided in 1-per-page format. If you find the puzzles are getting too hard, move up to Book #1 of the next volume, and they'll get easier again. If you find they are too easy, skip ahead by 10 books or so. If you are new to these puzzles, I recommend you start with Book 1. I've created a few additional variants here, all named after delicious sandwiches I like.Įach collection is ordered by difficulty, with the easiest puzzles in Book 1, and the hardest in Book 100. Sandwich puzzles have the interesting property that the number of givens for the puzzle can be significantly smaller than a regular sudoku. The largest clue is 35, which means that both 1 and 9 are on the ends (with all the remaining numbers between them). ![]() If the clue is zero, you will know that there are no squares between 1 and 9. For example if a row contains the numb178, the clue would say 12, which is the sum of 3+4+5. These extra clues, on the outside of the main grid, indicate the sum of the squares between 1 and 9 in the corresponding row or column. On this page you'll find four puzzle variants that all use Sandwich clues. Here are hundreds of free Sandwich Sudoku puzzles suitable for printing.
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