Maybe I am too niave, but.... I recently reported a site offering SEO services to SEMPO for dodgy practices. Unfortunately, it does not seem that they care about people like this abusing their good name to gain customers for their dubious businesses: So, if you are shopping for SEO services - beware! The fact that they are a member of SEMPO has absolutely no bearing on their quality. (I thought the "However ***** is a member of SEMPO" was an interesting turn of phrase )
They act as a SEMi Poor Organization whenever they don't care: There is one member of them who shows their logo on his site, while his membership has expired telling he is a member. Well, he's not. I haven't contacted them to let them know, and I won't notify them if I know which letter I can expect to.