Signed up and tried it out. Some feedback:

1. a better way of presenting the linked accounts (the small yellow icons are not easily readable). a flat list without the tabs,maybe?

2. the notifications need to be such that they don't push down content. not really a bad thing but somewhat irritating

3. shouldn't sharing be on by default when I link my account (twitter) ? couldn't figure out what the yellow power button meant till I clicked and found out.

4. the follow button above my twitter widget in the link account area shows @SGforums... no idea who that is and why it's there.