It doesn't flow off the tongue quite as well as thingadongdong dot com, does it?
There are a lot of vocal users unhappy about questions that are closed. I think it would be interesting if someone turned your SOO into another stackexchange site that picks up all the closed questions* on SO and allows people to answer them.
It wouldn't allow questions to be posted directly to SOO, only questions that someone actually posted to SO but were rejected by the community, so it truly became the overflow of stackoverflow.
It could be quite popular, and possibly profitable.
I don't have the time right now to do this, but if no one else wants to pick up the torch, then I'll take it, pay the renewal fee, and see if I can dedicate some time to it before I become bored paying for it.
/Image of a clock spinning around depicting the passage of time
Ok, I made some time to do a proof of concept:
There are severe limitations to stackexchange that makes it impossible to migrate questions correctly and easily, but I've got several ideas on how to deal with that.
* Except migrated or duplicate questions. Perhaps some other types (blatantly offensive?) might be excluded...