A while back I completed a PhD in AIED - Artificial Intelligence in Education... helping learners to improve their self-assessment skills through chatting with their computer! More details on that at www.ai-research.org.uk/alicekerly and http://open.academia.edu/AliceKerly
It was great fun, and after some time working in technology and training I had a hankering for more academic challenge and followed the OU's MA in Online and Distance Education programme to gain a PG Cert.
Now that's done too, P2PU looks like a fascinating way for me to combine my enjoyment for learning, with a great personal participatory experiment in innovation in elearning - a field I'm passionate about.