src: http://www.finextra.com/news/announcement.aspx?pressreleaseid=58285
Obviously:
- they use a non stable blockchain on the long run (i.e bitcoin)
- no other way than to redeem thethers for dollars for reducing supply
- 100% USD-reserve backed, meaning they need to have 1 additional USD in order to create 1 additional Theter
Therefore, the possibility for supply expansion is limited.