As I say, I took up this offer and the results are in.
Tbh, it is all quite disappointing, both in terms of the results (which obviously involves an element of luck) and the site itself . The closest match at 1% (ca 77 cM) is lower than my closest matches on MH and even My LivingDNA. I have 20 closer matches than that on Ancestry. I know the purists will say that the distant matches are the most interesting but thats not my point. I add that most matching levels, which are given in % rather than cM, are significantly higher than Ancestry levels as per recent TIMBER discussions here cf with MH
I can certainly understand why they are struggling as even an avid DNA genealogist as me, I was much pretty much done after 30 minutes playing around and I am sure I will only revisit sporadically to look for new matches.
The belief that you can begin to build a family tree only using some matched 3rd cousins once removed and 10th cousins etc is laughable.
All the trait and historic match junk stuff is there if you want it. The entry level haplogroup could have been interesting but in my case wasn't.
Still glad I did it, because you just dont know do you, but very underwhelming