If Bitcoin difficulty continues to rise at the current rate then one of these units will mine a little more than 2BTC in the whole of January next year. The 'mine it forever' total being around 4 BTC. Then you have to pay for electricity.

It's because people's greed overrides common sense, in other industries you wouldn't do pre-payments  for months or year in advance! The sellers have preying on the fear of increasing difficulty to drown out logical thinking.

OK, I just did the raffle provably fair style, and it ended up with people who don't have the sig winning. Obviously that's not going to happen, and I'd rather send it to someone who is active here instead of last active weeks ago (the next winner), I've decided to still give out 1 BTC, but as 0.1 BTC to the next ten people who reply here.

You MUST have participated in this raffle to get 0.1 BTC. You MUST link to your post on this thread where you have confirmed before the ending date.

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I had no idea I was limited, but tried to post on another page and was locked out..  Thank you for the info, I thought my browser was misbehaving.  So its 5 posts yeah?  I am a miner and have to ask some questions about my Rig, its really frustrating not been able to post my question at the main page, but now I know why.

Some alt currencies need to survive and get big in order to keep mining profitable