One idea I saw posted on this site that I really liked was the following and Im sure I dont have it 100% right (i dont know the technical terms)... Have a device attached to the stove(thermo???). When the temperature dips below a certain degree, it sends a signal to a fan, turning it on. The fan is blowing on the bimetal draft regulator, which cools the damper, causing it to open up quicker. When the temperature on the stove gets up to the required degree it shuts off the fan, allowing the damper to heat up quickly and shut down again. The fan wasnt for inducing air into the stove, it was to cause rapid cooling of the damper.
I really thought this idea would work nice for keeping a constant temperature in a house. It would help blow the heat around too, but could blow ash around too if any were laying on the hearth, which I thought was the only bad thing that could happen.
I wish I could credit whoever brought this up on this site so feel free to take a bow if it was you.
It does seem like forcing the air thru the stove would waste a lot of heat thru the chimney.