Its an hardearned knowledge...
Im guessing hours on hours, going through altcoin section, looking at coins, checking exchanges/threads to see value. factor in the diff and a bit of gambling stomach, voila you could earn some extra.
At this point microcoin dont even pay for leccy, hope this turns around soon.

Looking at network its around 2000Mhash total for the four pools, lets add another 500 to include solo, that 2500Mhash og scrypt jane, since normal scrypt is about 10x slower we are looking at 250Mhash of GPU power, roughly 333 pieces of 280X cards running.
That very little given the coins recently launched. Will be interessting to see what happens when the block reward goes up to closer to 160k. My concern is that the span was to wide, 160kblocks up and down seems like a long stretch to make it fair launch.