Some of you will have noticed this already, but we've set up an area of the blogs section specifically for Couch to 5k+ discussions. If you're a graduate, when you write a blog post you now have the option of selecting whether to "post to" the Couch to 5k+ area or the normal community blogs.
If you select Couch to 5k+, it will show in the "Couch to 5k+" blogs which makes it easier for fellow "+ers" to find. But it will still also be posted in community blog area so everyone can read it. So basically, only graduates can write Couch to 5k+ blogs but everyone can read them.
I think I could have written that more clearly (post Olympics fuzziness in my brain) so if you're confused, give me a shout.