Your Wii system is flashing blue again, yearning for your attention. A new system update is available, version 3.1, and it now officially includes USB keyboard support. (A previous update featured very limited keyboard functionality.) This should greatly increase the usability of the Internet Channel.
Also capitalizing on this new addition is an updated Everybody Votes Channel, which can be upgraded through the Wii Shop Channel. The free update doesn't appear to have any cosmetic changes. Rather, it simply adds keyboard support for submitting questions. [Update: An update to the Internet Browser is also available through the Wii Shop Channel.]
In addition, the Wii User Agreement has been updated. It's supposed to be available at support.nintendo.com, but as of this writing, an older document from the system's launch was still in place.