Diaspora (stylized DIASPORA*) implements a distributed social networking service, providing a-decentralized alternative to social network services like Facebook. I have been using diaspora for quite a well now and i am quite impressed with its simplicity and simple UI. I am sure most of the people will feel that UI is similar to Facebook and some features are quite similar to Google+, but it will be shocking to tell you that Google+ was released later to Diaspora.
Lets head straight to the features of Diaspora.When you login to the system, the first sight is at Stream. The feature is quite similar to Facebook wall. A feature that i liked in this is the, Its embedded with URL shortening and RSS feeding.Also, the "Aspect" feature allows to post on diaspora more than ones at time. Toggle public services by clicking the icons and with the highlight of the post, it goes to the concerned person :-). I quit liked the share button type, it looks very cool. "All aspects" is feature to Share the post with Family,Friends,work and Acquaintances.
Every action is quite synched like twitter success messages right on the top of the browser view It looks nice but Green could've been a change :-) With the feature of "Featured Users" you can search for Featured users you can Socially sync with.
Inviting friend is just with a click. All your Facebook friends and other email friends can be clubbed to your Diaspora ecosystem.
Diaspora is still in beginning stage but considering social medium i feel its much similar than Google+. With some quality work and good UI and social features, i am sure it will rock.