rogerd - 11:04 am on Oct 13, 2010 (gmt 0)

From the Wall Street Journal:

Some professional scrapers stage blitzkrieg raids, mounting around a dozen simultaneous attacks on a website to grab as much data as quickly as possible without being detected or crashing the site they're targeting. Raids like these are on the rise. "Customers for whom we were regularly blocking about 1,000 to 2,000 scrapes a month are now seeing three times or in some cases 10 times as much scraping," says Marino Zini, managing director of Sentor Anti Scraping System.

'Scrapers' Dig Deep for Data on Web - [online.wsj.com...]