[Ripe]

Ripe maybe you'd know the answer to this seeing as they cropped up in your previous post but who are the Twisted Rune and what is their purpose? There was a group called the Twisted Rune in Baldur's Gate II SoA as you probably know, is there any relation?

Well, Twisted Rune is secret organization of undead spellcasters based in Calimshan [I didn't play BGII so I can't coment on that]. The membership is very small (there is never more than 30 members) and are governed by so-called inner circle of 9 members seven of whom are relatively known:
Jymahua (female human lich Enchanter 19)
Kartak Spellseer (male human lich Necromancer 26/Archmage 5)
Priamon "Frostrune" Rakesk (male human lich Wizard 23/Archmage 4)
Rhangaun (male human lich Wizard 28/Archmage 5)
Sapphiraktar the Blue (male ancient blue dracolich)
Shangalar the Black (male tiefling lich Wizard 22/Archmage 5)
Shyressa (female vampire Wizard 20/Archmage 3)
The other two are unknown at the moment, but are certainly powerfull undead (something like phaerim, alhoon or beholder mage)

As for their goal - it is unknown.
During last 500 years since it's creation they could easily take control of all the powerfull families that rule Calimshan, but they have left half of them free of any influence by them on PURPOSE. So what their ultimate goal is, nobody know.

Also where have you found all of your info? It seems people are getting all sorts of different stuff, is there a book or something I should be specifically looking at amongst all the FR lore?

FR exist for over 20 years so there is hundreds of books of lore for FR (and I mean literaly). Some of the older stuff you may find on Wizards official site here, or you may buy it in PDF format for 5$ from Rpgnow.com here. Newer 3rd edition stuff you can probably find at some game shop.

Also you are allways welcome at either Wizards FR board here or Candlekeep here. Over at Wizards board discussion like this pops up at least once a month or two, and there is also Who is best fighter discussion [and no, Drizzt doesn't made top 20] apearing with same regularity.

Last note of interest: I don't think it's been mentioned yet which surprises me but why is the Chosen's silver fire seemingly being ignored? Isn't it akin to spellfire? I don't think it's fair to judge them based on just pure magical ability when their greatest weapon is their god-given gift... Are there stats for the stuff?

Yes, and No. Yes, it is a form of spellfire, but it work in completely different way. It does not require charging spell levels, it always deal same damage [4d12], it's particulary dangerous to undead [during 2nd ed they had to make save vs. disintegration or be destroyed]. The reason it usually get ignored is because it's greatest power is defensive - ability to dispell anti-magic fields and restore dead magic areas to Weave and Chosen rarely use it offensively.

And it wasn't many questions. And if you came over at Wizards boards you'll get all the answers you need from true experts [some of the answers might even come from creator of FR, mr. Greenwood himself]