slave wrote:
This is purely an economic issue.
Q#1.
Clearly, crypto-currency mining companies make money....BECAUSE of scale, but can an individual with an ave. PC make more money that he/she pays in electricity costs?
Q#2.
AND how much does this vary depending on the specific crypto-currency?? ...after all there are 667

different kinds.
Q#3.
Do you mine? if so, which one?
and if you care, this site has a visual history....
http://mapofcoins.com/A#1, highly unlikely, you're competing against dedicated machines and botnets, a consumer-level PC has no real chance to make a profit.
A#2, some, i don't know the mining rates and exchange prices, but i'd say that for the final result, there's no difference: none will make a profit that's worth the trouble, if any at all.
A#3, nope, see #1 and #2 for why