Several months ago, when UoL was still using FirstClass as their classroom platform, some fellow students and I complained about the use of some butchered Word file format for the lecture files that instructors distribute. We then suggested PDF as a good alternative, as the spec is open, layout is preserved, files are typically smaller and many cross-platform readers exist.
It seems that the switch to Blackboard also brought along PDFs! In my latest module, all lectures are in PDF format. This is another step in the right direction, letting UoL catch up a little with the Open University’s excellent online learning environment that is more oriented towards open standards. OU even use Moodle for many courses, and have some freely shareable (Creative Commons) lectures.
I hope that this competition is one reason why UoL’s system keeps improving now.