Best software to run social bookmarking site

I would like to establis a social bookmarking site, let's say something in the line of digg.com or propeller.com and run this on a domain of my own.

What would be the ideal software to do this (something on a php/asp basis).
The site should basically do the following:
* User Login
* Assign user it's own page with features like personal details, comments a report on his activities etc.
* submission of sites and pages.
* "Liking" pages submitted by others.
* Adding comment function on submissions of others.

 

Highly recommend Pligg (http://www.pligg.com/). It offers everything you need and have mentioned, and in the future if there's new features you want to add you can always program them yourself in PHP or hire a developer to make it. The system is extremely easy to create templates with and moderate users/submissions, plus marketing is a snap!

Check out an example of it in my sig (Blogger Den).

 

yes, pligg is the best free social bookmarking system ;/

 

Is there any server requirements for this? Or bugs that are nasty to remove?


What about http://www.kubelabs.com/phpdug/

 

agriya also offer a social bookmarking site - you'll find it under "community website scripts' on the site in my sign.