When the economy is not doing well, FSBO may not be a good option at all. Nowadays, it is hard for a seller to close a deal. There is too much competition in the market yet there are few buyers. If you have little knowledge about the market then there's no way you can find the ins and outs of the market. If you get caught up with a lemon, you'd end up being stuck and not knowing what to do next in order to resolve a particular real estate dilemma.
Some people may go for FSBO or For Sale by Owner and become successful to it. That is why they would suggest to other sellers to just drop the realtors and do the sale on their own. However, this is a case to case basis. What if you are a busy person and you do not have time to learn all the basics of selling a house? What if you don't know what the next step is in selling? Who do you run to? And if you find help, are you getting it from the right person?