I have an android phone, and I am currently waiting (not too) patiently for the promised Android versions
Path
This looks like everything I want from a social network. It is limited to only 50 friends, so I don’t have to worry about friending people I only tangentially know.
I am currently using Picplz on my android, but the UI is rough and it feels like an “also ran” app. I like the ability to post photos to multiple locations on picplz, but I would like a more robust user base.
Wunderlist
I have started using this on my desktop (in conjunction with the Hipster PDA for when I am not at my computer) and can’t wait for the Android app to come out.
I understand that developing for Android has many more hurdles than iphone (different OS versions, different screen sizes, different phone capabilities, etc) but the longer it takes to release an Android version of their software, the less relevant they risk becoming. If developing for the android is not something these companies think they can do, then they should consider opening up APIs so 3rd party devs can do what they are unable to.