Ok I’m thinking of building an Adobe Air application to aggregate all my networks, my search has come up a failure with no single aggregation application that can do what I need. I’d like to see what networks you would like to see in a desktop app. Vote for your favourites below and feel free to add your own (the list was getting quite long) also check this handy list @mashable.com for a more complete list.
If your worried about AIR’s memory usage check out this update on Softpedia (thanks Brad)
EDIT: as I wrote this I found 8hands (8hands.com) a cursory glance seems to indicate that it supports many of the networks I use.
EDIT: I also forgot to mention Mozilla Raindrop which is Mozilla’s social network aggregator thats being developed.