It may be my imagination, but, recently I've been getting the distinct feeling that there are alts and alt pairs mining with me in the popular mining areas. Either the main account and the alt following in another window or sometimes it just feels like I'm mining with two robots who have no human presence behind them. I can't explain it. Maybe its the free clothes they wear or maybe its the methodical way they move in step. I've only started noticing it in the last week. It might just be new post-launch players getting into mining, but if so you'd think there would be more hesitation, breaking away to meditate or eat.