Will,
MyEclipse for Spring and MyEclipse Bling are still very much in development, but these products are now completely managed by Genuitec.
Some of the older links do require a new release (that we are working on) to fix and we are cleaning those up. I noticed one link in our Configuration center that pointed to a stale feed; I just fixed this. If it is still broken for you after a restart, please let me know where you see the bad link exactly, perhaps we are not looking at the same page.
Thanks again for bringing this to our attention.