Thanks for the information, this is interesting. In the updated whitepaper they say:

"In the cryptocurrency space, speculators jump from cryptocurrency to cryptocurrency based mostly on
which one is expected to have short-term growth. Steem wants to build a community that is mostly owned
and entirely controlled by those with a long-term perspective.
Users are able to commit their STEEM to a thirteen week vesting schedule, providing them with
additional benefits within the platform. STEEM that has been committed to a thirteen week vesting
schedule is called Steem Power (SP). SP balances are non-transferrable and non-divisible except via the
automatically recurring conversion requests. This means that SP cannot be easily traded on
cryptocurrency exchanges."

This move seems a bit curious to me as a 13 week vesting period is far shorter than the previous 104 week vesting period. It is basically down to about 3 months. So the 1-week power down strategy doesn't really make that much sense anymore.

If anyone else is curious about this and wants to read more, here is the link to the whitepaper: https://steemit.com/steem/@steemitblog/a-radically-updated-steem-whitepaper and also something they are calling a bluepaper: https://steemit.com/steem/@steemitblog/announcing-the-steem-bluepaper