I've just read this thread... and even I do not think that it is important, I have to say that I am not Hertz's uncle, we are not related in any way. I have give him some hints, NOT solutions, and teach him something about RSA. There is not a collaboration between me and Hertz, just compare my progress and his progress, it should be obvious.
I hope that from this thread all "young" (read inexperienced) players will learn to ask for hints in the forums. Asking for hints using the PM should be done ONLY if one have done a really important part of a challenge and posting the progress in forums may spoil the challenge.
Anyway, I have to say that I have challenges made in proportion of over 70% and did not ask for hints, and most probably I will never ask.