Unfortunately the entries do not seem to get sorted properly by time. A few from a couple of days ago are at the top of the feed at the moment. The New SuprGlu RSS feeds seem to be ok.
A second problem is that the whole of a post is included, which can take up quite a lot of space for example this post in Sandaig Otters has 8 images 500 pixels heigh each, only the first shows on the Sandaig Otters page but everything shows up at Primary School Blogs.
I guess if I could understand a bit more php I could use MagpieRSS to do something similar.