Memolane is a new service that aggregates all your online social activities into one timeline. Think of it as a chronological diary for all the things you have liked, tweeted, posted, and uploaded.
The interface is very clean and intuitive.
The services that are supported as of this writing include: Facebook (including pages), Twitter, Flickr, Picasa, Last.Fm, Foursquare, Instagram, Tripit, Youtube, Myspace, Vimeo, Wordpress, as well as RSS feeds for your blogs such as Tumblr or Blogger. Google+ is not supported as of now unfortunately. One other nice things about it is you can individually set privacy settings for each service, either to public, friends only, or private.