Proxy logs need a bit of work done to them before you can start analysing the content. This is of course assuming you don't have a fancy product to do all this work for you ;). First, you need to work out the regular expression that defines a line in the proxy log to parse it into a nicer format such as CSV. A lot of the CSV columns can probably be removed; the most useful columns are URL, date & time, user agent string (to work out what browser the user was using for example) and request status code (to work out if the user was able to access the content or if it was blocked, unavailable etc).
promotion Itiel Dror coasters Myxomatosis censorship holiday hacking crafts Moo CV induction presents chicken exams SECC binky chemistry internet history web history File tunnelling steganography naughty bunny readability fabrics exhibition greeting iPod Touch quantitative rock jquery Sainsbury's canvas Windows Snapfish Nybble demographics O2 text python thumbs.db pork unicode Barcelona Windows 7 thesis timestamps piggy bank Internet Explorer paintings Megalosaurus timezones page breaks counting court report etiquette Lenzie tags art gallery DNA The Balmoral