If you didn't understand that ACORN was a scam when you first heard about it, you don't understand people. Same with BlueHippo.
There are times in everyone's life when you look at someone poor unfortunate soul and decide you should do something to help them or lift them up somehow. But to make a business out of doing this? No, sorry, it doesn't work that way. Neither financially or psychologically. What this means is that when you encounter any organization, group or company that seems like they are doing only good, altruistic work 100% of the time there is something wrong. Say, like when you hear about a company that takes people with no credit history or bad credit history and helps them get a computer by financing them. You can bet there is a substantial amount of fleecing going on.
Now, could Dell give 1 computer to poor people for every 1,000 they sell? Sure. Or the equivalent in some form more useful to poor people than a computer. And maybe they do with far less publicity.
So do you think an organization that is dedicated to getting housing for poor people, people with limited means, bad credit history and unstable work history might have some sort of alterior motive? Absolutely. And everything I have read about ACORN since the 1970s indicates that they have been playing games since their very inception. Games that have to do with power, control and influence that have nothing to do with their supposed mission.