Blekko, introduced a new feature today dubbed as 'Web Grepper" will allows users to run searches on the ENTIRE Blekko index of more than 20 billion URLs according to a recent presentation, to reveal data that you could not search and find using keywords.
In other words, you can also search material in the actual HTML coding of a web page.
To run Web Grepper, head over to the Blekko's homepage and enter the slashtag /webgrep into the search box. Then, click the request a report button and enter what you would like to have grepped. Next, on Blekko's community of users vote on what greps to run. Blekko will run reports twice a day, Monday-Friday.
Blekko said they'll be reviewing reports to make sure that Web Grepper is not be used as a hacking tool to obtain personal and private info.
The following are a few examples of Web Greps that Blekko has run during the testing:
- The number of sites utilizing Facebook Comments vs. sites using Disqus
- The number of urls and domains using nofollow tags
- Sites with rickroll links
- Determining which type of feed is more popular, ATOM or RSS? (see image below; click for larger version)