Despite all the complete and utter bullshit out there about, "earning easy money on the Internet", I know for a fact that you can make money with an online business, as a friend of mine is doing exactly that.
Now it ain't quick, and it ain't easy, but it can be done.
You have to devote time and effort to it, and treat it like a JOB, not a HOBBY. If, like me, you just want to piddle around and post whimsical articles online, that's okay too. Just don't expect to make a fortune overnight!