What is the best way to make money online?

I've made quite a bit of cash posting on forums, such as postloop, though I have done a lot of different work. What it really depends on is how much work you want to do and how you want to be paid. With sites like Amazon Mechanical Turk, you can be paid well for doing things but now they require your SSN now because of changes to the tax laws. I suggest you do some searching for task sites, they can get you a lot of cash if you do the right tasks. There are also of course survey sites and more, all depends on where you are from and what you want to do.

The best way to earn online is from blogging because its not a one time income you will be earning as long the blog is available in the search engine.

There are several ways you can earn without investment, you just need to find the sites that suit you the most. If you want decent paying jobs, then there's odesk and freelancing. You may have to have a skill though like a good skill in writing. There will be an employer reading over your drafts. There's also iwriter which is less strict where you write an article based on keywords and a set of instructions. If you want to start with the small easy stuff, you can start article writing on anything at squidoo, hudpages and triond. If you're into playing games for money, there's anno1777, second life and dungeons and treasures but it may require some of your patience. I also earn from Slice the Pie from reviewing music. If you want to answer questions then there's weegy which is good paying.