Well, the most likely reason (assuming you can't see any page on this site) is that you've been blocked from reading this page .. and site .. probably because you've been doing something you shouldn't have, or someone using the Internet in your location has been doing something they shouldn't have. If for example you're reading this page and you're from Saudi Arabia, then the chances are that you are either not in Saudi right now, or you're proxying your connection via a different country.
Dear user of IP address 188.8.131.52 (which would be attributable to email@example.com
You can't read this page because today, you accessed the site over 12 and a half thousand times.
- this is a little bit 'piggy'.
If you would like to use a crawler / spider, firstly don't run it against this site, and secondly, learn to configure it properly before pointing it at someone else's site. If you are not using a crawler, then there is something seriously wrong with your computer.
If you would like to continue to use this site, please fix your computer or otherwise immobilise the user of said crawler (taser, handcuffs, polonium-210 - whatever works for you) then let me know. If on the other hand you would like to provide an arrogant or abusive response to this posting, I would be happy to block more IP's from the associated address range.
.. incidentally, "Mad" does not refer to mental illness, merely my reaction to having to perform site maintenance and blocking on weekends.