1. You can study online and work at the same time. Online studies allow for flexibility.
2. Aside from content, you will learn you will gain valuable experience in using tools of the knowledge based economy that are already used in the workplace (online studies are not just about email and forums. You find yourself participating in video and audio conferences, and collaborative projects with people who are on the other end of the continent or the globe).
3. The practice you get in posting online will improve your writing skills for web and web 2.0 environments.
4. HOWEVER..do check out the reputation of the school. Some are accredited institutions and have excellent reputations. The 'for profit' institutions are all over the map, though and may promise more than they deliver.