If you think it might be OK to poop on snow...you really need to read this book.
But since you are lazy and cheap, in addition to clueless:
1) Carry you poop out - best solution, and in popular areas, the only considerate one (i.e. blue bags, poop tube, ziploc bag)
2) In areas where there is organic soil, dig a hole and bury it. As previously mentioned, don't dig where the soil will be washed out
3) drop it into a crevasse
4) smearing - on rock and only when you know there will be 48 hrs of clear weather - key is for it to dry and bacteria to die. Spread it thin. Prefer SW aspects. This method is definately not acceptable in popular areas.
Poop on!