Let me tell you my raw impression of PH as an outsider.
It's a cool kids club for cool SV startups as selected by founders and employes of equally cool SV startups, where it's specifically "cool" rather than "notable" or "innovative". Secondly, while you can't join their ranks at will, you will be given a membership to comment on your own product should some cool kid submit it to the PH. Essentially they exchange memberships for adding content to PH and helping build PH's credibility. It's a reasonable approach, but they are just being ... too blunt and obnoxious about it.
It's a cool kids club for cool SV startups as selected by founders and employes of equally cool SV startups, where it's specifically "cool" rather than "notable" or "innovative". Secondly, while you can't join their ranks at will, you will be given a membership to comment on your own product should some cool kid submit it to the PH. Essentially they exchange memberships for adding content to PH and helping build PH's credibility. It's a reasonable approach, but they are just being ... too blunt and obnoxious about it.