Instead of having to use your real e-mail address, this website gives you a real but temporary e-mail address which you can use to sign-up to websites which you might be afraid of selling your e-mail to spammers. Even if you trust that website but would rather not give away your real e-mail address, then this is the answer for you. The only limitation is that the e-mail address expires in 10 minutes. But fear not, there’s text below the email address which says “I need more time! Give me 10 more minutes!” Click it and it gives you 10 minutes again, not more not less. Any email you expect can be seen after clicking refresh in your browser. After 10 minutes pass, the website will inform you: “Your e-mail address has self-destructed. Get another e-mail address.”
This website shows you detailed statistics such as world population count and much more than you would except when compared to just another statistics website. If you’re into statistics, this website is definitely for you.
Ever wanted to search using an image instead of words? With Tineye, you can do this. Description from the website: “TinEye is a reverse image search engine. You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.”
And as promised, here are some Firefox add-ons which I really like: