keyplyr - 9:37 pm on Mar 6, 2013 (gmt 0)
Great thread but I'm not understanding the "block Blekko" advice. I've never given it a nanosecond of thought one way or the other. How is it harmful?
Blekko scrapes (caches) your site content, even ignoring NOARCHIVE tags if present, and publishes your cached pages on their server for anyone to view, copy, etc. They also offer an SEO service where they sell your dissected data to subscribers.
IMO, besides the ethical violation of ignoring the rights of the property owner by putting your web pages on their server whether you want them to or not, you loose any security or safe guards that reside on your own server via httpconfig or htaccess. Also, any Adsence revenue is of course lost as these ads are now stripped from the cached pages.