Useful Site for Reconnaissance

I just came across this website I thought was sorta cool and wanted to share with everyone, apologies to those already aware of it. For those who aren't, It's designed for SEO purposes but a few of the tools can be very appropriately used to conduct some reconnaissance on a target.

By supplying a URL to the site's 'Spider Test Tool', you can quickly pull:

All outgoing links from the site

The source code of the page

Key words and density <-- very useful in crafting custom password lists

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http://tools.seobook.com/general/spider-test/

In addition, the site provides a 'Server Header Response Code Check Tool', which allows you to quickly check the server repose codes of a single target, or a large number of targets, which can come in super handy.

http://tools.seobook.com/server-header-checker/

Hope someone finds this useful.