I would be interested as well. I just recently read an article that I cant find though. It said something about Ethereum mining becoming non existent soon due to a change in it. I need to try and find that article now. It convinced me not to bother but if I can do it I would like to. Electricity costs in China are next to nothing. I can also upgrade my computer for super cheap and if its actually making money buy another one or two computers.
So Ethereum is going to change... eventually. It is more than a year out and I imagine there will be an announcement well before it actually happens. But the change does not necessarily mean that it would no longer be profitable to mine Ethereum. What it does mean is that it would change who can mine and under what terms.
Currently there is a proof of work system where all you have to do is compute stuff and prove that you've found the correct solution. It's very open and very easy to enter.
Ethereum will be moving to a proof of stake system at some point. In order to participate in "mining" once they do that you will have to have a "proof of stake" which will be a certain amount of the currency, which will likely have to be more or less frozen for you to maintain a proof of stake status. But what that means is that if you do have a proof of stake then you are now part of a smaller group who has special rights to mine the currency.
It'd be fun to be in that group, right?