Cool nerd tools!

OK, since I've been doing this for a long, long time now I have come across some cool sites that nerds, and average users as well, can use to do all sorts of cool things. Enjoy and add-to the list with your cool sites as well:

• Take a trip back in time!
• Check your email to be sure you're not on a spam list and how your email is routed.
• Check your ISP's speed upload and download rates
• This site means a lot more than you might think in your search engine rankings
• How fast does your website download?
• All things domain and IP related can be determined here
• Products to help your site rankings with Google
• What Google Nerds do on their lunch breaks

Have fun!
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