RLOs and all that...
I've just finished reading an entry in Dave Davies weblog about RLOs - well worth a read. He's taken a rather satirical look at learning objects in an entry he calls The Content Conundrum. In a satirical Q&A format, Davies explores a number of the assumptions around RLOs and their use (or intended use). Overall, a worthwhile read - and many of the links David has included are worth exploring as well.
While you're at it, take a look at some of his other entries on the topic of RLOs and resources in the online world, including:
If RLOs didn't exist you'd have to invent them and his short followup piece, The problem with definitions - or how I learned to get over learning objects and start making good e-learning instead