[p49k]

This approach only stops the most basic and laziest scrapers. Some people have tens of thousands of diverse IP addressed to utilize for scraping. Many of them will not give a shit about your bandwidth or server constraints and will cause your server to hit bottlenecks, making it slow and useless for everyone.

[BorkJames]

I guess the best approach would be to captcha everything until we've captcha'd ourselves back into dial-up times for content delivery. /s

[Grollicus]

You ever used tor lately?