If you have a spare box going and free electricity I say go for it.. But for the most part I think you'll be mining at a loss.
That being said I do like the fact that BURST is something new.. so if you have space hard drives laying around.. go for it!
Not really. A typical 3.5" HDD is using 6.5 to 9 watts. For comparison a WD green is using 4.5 watts during heavy use and solid state drives using 0.6-2.8W. Going even with 9W will only cost you $11 a year with $0.14 kWh cost, per HDD.
Of course investing into Burst is not advised but if you do have at least a few TB of free space along with a PC running you can put them to use.
yeah.. but the components needed to run those hardrives are going to eat power as well.
PSU, CPU, GPU, Ethernet, RAM all use electricity.
Maybe if you had a machine with a whole shitload of drives it could be profitable.. But a single or dual harddrive computer? I highly doubt!