jQuery Lifestream Plugin – So So Social
So So Social is a jQuery plugin which parses RSS feeds from your various social networks and displays them as an "activity feed".
Thanks to YQL, it doesn't require any server-side scripts and can be completely customized with the help of CSS + JS settings.
By default, the plugin supports Twitter, Facebook, WordPress, Tumblr, Last.FM, Delicious and Flickr.
In order to add more services, just digging the code and extending it with the same methodology will be enough.