A few times I've been asked to recommend RSS aggregators... so for the record I've taken a look into my feedburner stats and here's the ranking of types of aggregator used to read my ramblings:
Slam-dunking in at Number 1 is bloglines...
Holding on by its teeth at No.2 is Newsgator
Rolling on up the chart is Rojo
In at No.4 is Google Desktop
...and at the bottom of the pile (but still they are on the list!) is the beta (mind you it is build 309!) of GreatNews
All interesting stuff and I'm sure your feed readers might be different but I'm slightly surprised by the presence and popularity of GreatNews. Mind you this is probably not a statistically valid sample - but interesting? Only you can tell!