grasshopper wrote: "What they don't tell you is that science has recently discovered there are 'poo types' just as there are blood types."
That's the part that gives me pause. Even if you drew the donor from your own family, if they don't have the same "gut biome type" you do ... could be dicey. If similar to bone marrow donor matching, perhaps a 3/4 match might be enough for the fecal transplant to work.
This is still an option I'm considering. The more I read about gut biome the more interesting it gets. For instance, I hypothesize that if the two years I was on doxy destroyed my gut, and your gut biome is your first like of immune defense, then everything after that was falling on the shoulders of the remaining immune forces. Once they got exhausted, it was last one out turn off the lights --> CFS. So if you restore the gut, it may not solve all your CFS problems, but it could be a vital step in the right direction.
I put this in the same category as antiviral therapies. They work perhaps only for those people for whom a break from constant attack of their immune system allows it to bounce back. For those who may also be dealing with say, gut, and heavy metal, or life stress issues, it might not be enough, thus the % of nonresponders.
My first step in this direction was to get the American Gut Project test kit and send off my sample. It takes six months but should give me the complete gut biome map. I'd like to get the rest of the family tested as well.