1) Site Flipping Does Contribute to Your Passive Income.
This will be very controversial because I have involved in tons of arguments about site flipping vs affiliate marketing. A lot of people think that site flipping does not contribute to passive income which is not true. In March 2009 (this month), I reduced my site flipping progress by 4 times due to exams and other stuff I have to attend to. However, I am still generating passive income through selling hosting packages to previous customers and simple affiliate marketing on sites that I am going to flip.
2) Most Site Flippers are Designers/Writers.
This is in fact very true. Most established site flippers know how to use photoshop and know how to spit out a 500 words article in 5 minutes. This is one reason why their sites is selling because they can easily alter anything to what the buyers want.
However, I am not a designer or writer myself. I write not-so-awesome contents (like this post ) and I don't even know how to use any graphic editor except Paint.
3) Site Flipping is Overrated.
I'm a site flipper myself and I personally think site flipper is VERY much overrated. I've seen some "so-called" successful site flipper selling guides and eBooks like site flipping is as easy as spelling ABC. It is not. The only easy part of site flipping is that as you flip more sites, things got repetitive and you are basically do the same stuff for every single stuff. So, it gets easier only when you flip more sites.
4) Site Flipping is Not Just about Blog Flipping.
If you look at most guides and eBooks, most of those "so-called" site flippers actually focused on blog flipping. Let me repeat this again, site flipping is not just about blog flipping.
5) If you sell start-up sites, you don't need to know anything about marketing.
Of course, if you are selling start-up sites, you don't need to worry anything about marketing, traffic generation and conversion. I know some on those internet entrepreneuers actually hate marketing & promotion, which flipping start-up sites will benefit these people wholly.
Hope this helps