I'm going to be putting about a TH into BCS, before considering where else I could put my other BTC into. I might just keep feeding my Cryptsy mining shares, not quite sure yet. The way I see it, 5 year contracts are like lifetime. Except some lifetime services that determine payout in forms of 'shares' (Cryptsy, Scrypt.cc, etc) are simpler and you can get your BTC back (mostly, or at profit depending on trade price at the time). The major advantage I like seeing with BCS is the referrals are not of increasing hashrate (though, that'd be a nice option) but rather instant payment. It can encourage the user to use that referred BTC to invest into BCS again, to purchase their own hashrate which gives a more flexible option since you can choose where else you wish to put it.

EDIT: @Ritch, thanks for the +1! Some don't understand the concept of mining, I can't blame them. I try to explain it to most people and they don't understand how it works. So I do my best to help educate the masses on how the concept works. I like to compare it with gold mining, gives a good analogy for those trying to imagine the concept.