ya Veki, link is not working. Dunno why, probably they have some tech problems on the site.
The link that Geier posted will answer your IL2 question and you're gonna love the answer.
Leaning thing and getting up and down in your seat didnt really make me go wow, but that head tilt thing made me drop my jaw. I was like "look ma, i'm flyin".
I know 6DOF will not happen to LOFC, but i do think that roll axes could. Yaw and Pitch work and i dont see why Roll should be any different or harder to implement.