Re: What does "transactions -> use change address" do?

OP please read about change on the bitcoin wiki:

https://en.bitcoin.it/Change

Put simply transactions often have change that has to be sent back to your wallet. For privacy purposes it is better to use separate change addresses. You should leave this option checked. If you leave it unchecked change will be sent back to the address where the input coins came from.

What that page doesn't tell is how there is a conflict with change and network fees.. First think new users are going to do is try and combine change with other change for other transactions..

I can't think of any conflicts. You will lose privacy if you combine multiple change outputs into a single transaction though. Is that what you are referring to?

no I'm talking about the cost overhead in the form of fees when you try to combine change balances for inputs. I'm actually interested in what you guys suggest people do with change seeing as you don't see this as a conflict.. wallets don't efficiently use them..