If you set up 10 Digital Ocean accounts ($50 / month) and mined some scrypt-based coin (optimized for CPU mining) and pointed all ten at a pool, that's only ~30khash/s. Your desktop PC probably has more than 30khash/s mining potential. D.O. is one of the few hosts that doesn't block mining and we'll see if that lasts. So 30khash/s is maybe 20 cents worth of altcoins/day minus fees to convert that into dollars. So you're already losing $44/month, hurting everyone on your hypervisor and difficulty is rising. And I think Litecoin was an attempt to make CPU mining more lucrative ;-)