More like what is with iHub? The same folks are pulling another scam with CLRH and there is nothing most folks can do about it. I posted about that here yesterday and it was deleted. I also made a post on that board and it was as well. That place is pretty much ZLUS 2010 with the Kool Aid drinkers not listening and the mods/iHub protecting the scammers.
That appears to be consistent with my cross-checks when I got curious about it, e.g. PL is Pink Limited. So it appears to relate to OTC Markets designation of Market and Status on their site.