Read TechCrunch from its front page. This story gushes about how easy SocialThing is because "you only have to provide it with your credentials" to other sites. Below it is a story about a gmail scam that says "users should have known better than to type their email credentials into a third party service."
I went to Techstars for a Day on the 5th of March and met the founders of SocialThing! there. They are a nice group of people.
Keep in mind that 28-11 doesn't fully describe FriendFeed's lead over SocialThing in services supported. Unless SocialThing's LiveJournal support is really RSS support in disguise, FriendFeed supports infinitely more services than SocialThing.
How many of these things will be around in 5 years?