Wpfavs was born to made life easier for developers and general public. If you ,like me , do at least a dozen of Wordpress Install every month, you will find this site very useful.
It's plain simple, you register at the site with your Wordpress.com account, you create a WpFav list and you add some plugins to it. Then you grab your API key and you will be able to browse your plugins lists everywhere and do bulk plugin installations.
The site is in Beta and I will be adding more features with time. I will improve plugin search to include more options and change design to something nicer. But first things first, create your own WpFav or browse existing ones!