Recess appointments are overused by just about every administration. Bush sure overdid it. They should only be used when there is a clear and present need and the senate cannot be convened for over a week in the future. Additionally, they should only last 3 months from the next time senate gavels IN session. There is a reason seats require a confirmation process.
I'm not happy with this use of it, but that is largely because I'm not a fan of it in general.