From the looks of it it seems you are mining from a laptop.

If you already leave your laptop on 24/7 and mine when you are not using it, why not. However, the overall hashrate of 39 Mhash/s isn't that great compared to a desktop graphics card.

But as what soulmann said, it wouldn't be profitable at all unless you have free electricity. You would be looking at about $6 a month with that setup (Calculator here: http://www.alloscomp.com/bitcoin/calculator )