Regarding INT not helping with weapon skill-ups ... I would like to see some text specifically stating that it does NOT help. I've seen lots of text saying it DOES ... and I have some anecdotal experience.
Having recently acquired my off hand fist from Quel'Danas, I decided I need to up my unarmed skill ... it was sitting at 250, and wasn't doing me any good.
So off to Blasted Lands to the "Immortal guys", unequipped my weapons and started beating on him ... unarmed skill climbed quicklyfrom 250 to around 290, then it started slowing down, until from around 300 - 310, I was getting a skill point every minute ... eventually, it "Stopped" at 310 (well, at least it was 5 mins at 310 with no skillup).
So, off to the AH, bought a whole bunch of int gear ... boosted int to around 300 ... went back ... and what do you know ... immediate skill-ups. Within 10 minutes, I was at 350.
Then I quickly equipped my 2 hand sword, which hadn't skilled up from 345 for a looong time. Granted, I don't use it a lot, but I do go into BGs about twice a week, and I use it then. 5 Mins later, I had the 5 points to 350.
Now, in my opinion, and from my experience, INT definitely does help with weapon skillups ... I would still be sitting at 310 unarmed if not for that int gear.