If you have a good lawyer, sue them for copyright infringement. Otherwise ignore it, the current crawlers can do pretty much an average visitor can, some even u

If you have a good lawyer, sue them for copyright infringement. Otherwise ignore it, the current crawlers can do pretty much an average visitor can, some even use real browser engines. > By limit I mean limiting each IP to viewing a maximum of 50 to 100 unique documents per day. That won't do you any good, It's ridiculously simple to obtain unique IP addresses and proxies, not to mention that your database may blow up with that much data. :)