Link Time

"Ta-da List is the web's easiest to-do list tool. Make lists for yourself or share them with others. It couldn't be simpler."

They claim it only takes 10 seconds to sign up! Looks cool, not sure how viable it is for long-term use, though.

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"Lists of Bests is a place where you can…

1. Create a list of your favorite products, places, people, goals, food, etc
2. Mark off your progress on an existing list
3. Compare your progress on a list with someone else"

For the competitive list-maker!

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"The List Universe, a site full of top 10 lists covering all manner of subjects. We are updated daily!"

The kind of site I get sucked into very easily.