I currently have the best freelancer method going which is literally a whole business package in one. I do not use this method on this account (I don't want people to keep an eye on my techniques so I'm staying anonymous in that respect).
Using freelancer it is very easy to start an SEO/web design etc business (being a broker) IF you know how.
First you must learn the secret/private method to win bids almost every time which without this knowledge is extremely difficult. Especially if the jobs are high paid with many bids.
Secondly you need to know where to and how to find businesses who will take your business.
I'm willing to sell this info to around 2-3 people for the correct price so as to avoid saturation. This literally can bring in large amounts of money with very very little effort.
Please post bids or PM your bids. Any questions hit up the clarification board.