Top techniques to avoid 'data scraping' from a website database

Question

I am setting up a site using PHP and MySQL that is essentially just a web front-end to an existing database. Understandably my client is very keen to prevent anyone from be

Answer 1

What about creating something akin to the bulletin board's troll protection... If a scrape is detected (perhaps a certain amount of accesses per minute from one IP, or a directed crawl that looks like a sitemap crawl), you can then start to present garbage data, like changing a couple of digits of the phone number or adding silly names to name fields.

Turn this off for google IPs!