As for the first link the concept is pretty ridiculous. They are going to wipe out as many bacteria as they can with the antibiotics, including the good bacteria. Then they want to put the patient through a procedure to replace a limited number of the beneficial bacteria that would control the bad bacteria in the first place if they simply built up the numbers of beneficial bacteria. Therefore, cultured foods and prebiotic fibers are a better choice and to not include any potentially dangerous medical procedures.
Read this link on the process and the problems that the pre-treatment with antibiotics cause:
Hv, what are your thoughts on this? it is being posted all over the Candida Support Forum
As far as the fecal transplants I think these are not only ridiculous, but also dangerous. They cannot test for all possible pathogens. Especially viruses since there are no standard lab tests that confirm the presence of any particular virus.
And they are wrong that people living together would have the same microbial strains. Colonization of the intestines with the flora starts during or at birth. Other strains of beneficial bacteria can come from various sources such as eating root crops, but this does not mean both people will have the same diets or exposure.
The topic of fecal transplants has actually come up here before: