Thanks hedgy73.
Well again it all depends on what your plan is but before you go buying s3's they may not be the most gh/s per dollar and you'll need a power supply. Is heat and noise an issue for you?
Hmm, not really. If I were to go ahead with this (and I'm not even sure I would be able to get free power at this point in time), they wouldn't be set up anywhere those would be a problem - well, noise wouldn't at least; not sure about the heat, particularly during summer, but I guess that's what the AC is for.
You could have at least given an indication of your budget. Pleas provide more information if you are serious about this.
Apart from mining bitcoins - can be calculated as soon as you know your budget - there are other things you can do with free electricity. (For example build a server and sell out VPS, VPN accounts, cloud storage and backup systems for friends and family, possibly a bit larger user group. Rent out space for other people's small servers etc etc.)
Well, as far as budget goes, at the moment, I wouldn't be willing to spend more than about 2 BTC; but, as I said above, I'm still not even sure I would be able to get free power (possibly through some sort of arrangement with a couple of friends; if that doesn't work out, then I guess this would never be profitable with my budget and usual power costs around here) - so, I'm basically just looking at the options for now (in that regard, thanks for the other suggestions you posted, though I'm not sure your post was directed at me or at mrbigA
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