401k's are a scam.  

So once my family members moved out we put it up for sale at Market value to test the market while we were making some small rent repairs in case we weren't able to sell if for the price we wanted.During that time our Realtor showed the house to a good number of interested buyers, but every time she brought a buyer to the property, the neighbors next door would come over and wait for them to exit the house to start telling the buyers the house had all these issues and that we were trying to scam someone into buying it.

I have been getting this a lot with Craigslist here lately, from what i figure they are trying to cut down on spamming and the amount of scams going on .

@Adam Clark a pamphlet and a nice business card stapled to it...Your in a huge saturated market like mine (Los Angeles) where sellers know they are sitting on vaule even in a piece of crap of an area, theres probably going to be 3 to 4 people who have already sent letters, or reached out (not always but usually) and Trust and Transparency is key with so many scams. 

Are any of them legitimate or are they all scams?

I went to a guru seminar 3 years ago, but instead of falling for the scam, filled my legal pad with notes and spent the next two years gaining further knowledge about RE investing and particularly something that was touched on in not much detail... the key to investing with other people's money with little risk--aka wholesaling .

Also, a friend of mine almost got scammed by someone trying to sell a property they didn't actually own. 

There are too many scams online.  

And because it's appealing to many investors, there are at least a dozen "turn key" operators in most major markets, many of which are just north of scam artists.  

@John Thedford Thedford Well we have you to cure the world of scamming.