1) I'd like to point at my main point again : "What you are saying is people should stop writing PF to keep others from abusing the OOC info they acquire from OOG resources?"
That is crap. If people don't know how to RP, they need to be taught how it works. You said yourself you stopped posting PF because you're worried about others using that info against you IC - doesn't that bother you? Doesn't that seem WRONG?
No. It's a pure cost/benefit analysis: do I enjoy winning on IGS and in Eve more, or freedom to write what I want? The former. Others have other goals. It's not within my ability to force Jade to do as I will (that would require a real-life force or authority, most likely), nor is it worth the time and effort to estrange him in-game. Therefore, from a purely logical standpoint, my most effective remedy is to remove his access to sensitive information.
My hope here is not to change Jade's mind, because his mind is set in stone - he is stubborn and will think no different. My hope is to change the minds of people like you. This kind of RP is not acceptable. You cannot justify this kind of RP, while being a victim of it yourself, unless you wish to see RP fall into the "lolrp" category that so many of us have run into.
What you think of Jade as a person in real life has no place in this discussion.
That said, you are not the arbiter of what is or is not acceptable RP. What defines "acceptable RP" is the amount of people willing to embrace that style (and, to some extent, CCP). And you have not provided a reasonable connection between the use of OOC information in IC settings and the degeneration of RP - you have merely stated it as fact.
If it is harmful, it is harmful because it enforces a sense of "total war" in the community, and forces people into cliques and groups to protect themselves. That may or may not be damaging to RP on the whole: on one hand, people would communicate with others outside their group less, but on the other hand, when people do change allegiances, it would have much more impact.
IC and OOC boundaries need to be clear.
IC and OOC boundaries will always have some blurriness to them. Let me give you an example:
Suppose that you had a member of your corporation set up a "victory parade" for your corp, where you would all make a series of jumps through several systems in you most expensive ships. Now, after this has all been set up ICly, your member contacts you an hour before the flight, and says "hey, this is OOC, but I just wanted you to know that me and some buddies are ambushing you and are gonna kill you and all of your corpies. We anticipate great loot. Oh, and we know your clone isn't up to date, so anticipate losing some SP. Now, you can't tell anyone, or do anything about it, 'cause this is OOC, and the planning was IC! Kthnxbai."
Tell me, are you going to go to your podding and associated loss of wealth and SP with head held high in your belief in the IC/OOC divide? Uh-uh, didn't think so.
Ok, what if you read this in a blog? What if you read their plans in a story?
Jade is waging a propaganda war - almost everyone not a fractionite is ultimately an enemy of his character, and he will use any advantage to conduct his propaganda war as well as his spaceship wars. He's playing to win. And there is nothing wrong with that. It may offend you, but there is nothing intrinsically wrong with that.