It's tough to gain alot of ground now. They have changed the bigadv requirements so that you need atleast 12 cores or threads to run them. And that will go up to 16 soon if it hasn't already. So someone like me with two 4 core, 8 thread rigs is out of the bigadv game. I can't compete with the point output of bigadv rigs anymore.
But, I am back for a while. Just signed a new electricity contract for 6 cents per kwh so I can minimize my cost while contributing.