Sort:  

We do have some extra computers from our old servers should we consider mining STEEM or something?

You could! With the patch to the mining code recently it appears that more users have been successful in mining blocks. However I'm not entirely sure at this point a miner would run in profit.. Perhaps if you have cheap / free electricity.

No not cheap unless we move to China :-) Is there any added value if we become a witness or are there plenty already?