Google is discontinuing reader. I have changed the main blog aggregations to use yahoo pipes, and will do so for other feeds later. I may give updated instructions on this blog, though in the mean time it should be easy to use a feed combiner of your choice instead of google reader.
I give no warranty that yahoo pipes will continue to be available, I could end up having to change again in the future!
If you would like to aggregate multiple RSS feeds into a single feed in Google Reader, follow these instructions.