The latest issue (9 September) of Nature News is dedicated to Data Sharing:

http://www.nature.com/news/specials/datasharing/index.html.

Articles includes:

Data's shameful neglect (editorial)
Data sharing: Empty archives (feature article)
Prepublication data sharing (opinion)
Post-publication sharing of data and tools (opinion)
Nature Opinion forum: Prepublication data sharing (elsewhere in Nature)
Nature Opinion forum: Postpublication data sharing (elsewhere in Nature)

In two of the opinion pieces, scientists call for broader data-sharing policies and make specific recommendations for good practice relating to pre- and postpublication data sharing.

For anyone who may be interested in this topic, Chris Rushbridge has posted some comments from his perspective. These can be found at:http://digitalcuration.blogspot.com/2009/09/nature-special-section-on-data-sharing.html