Wiki Day

Good developers are always interested in learning new technologies, and management usually wants to find inexpensive ways to keep them (which means keep them happy). It's well known that Google allows developers one day a week to pursue whatever side (tech) project they want, and that they've been voted best company to work for in the US. How about a variant of this for the not so well endowed (but aspiring) software company: a wiki/blog day (or if need be, a half-day) each week where developers pick a (potentially) relevant technical topic they'd like to know more about, read about it online and post a few dozen facts / thoughts about it on an internal wiki (to be reviewed by their peers/manager). Might not be great for the short term, but seems like it would be a win in the medium-long term for morale, technical freshness of the team. Not to mention the new product ideas it might stir up...