I've never quit entirely from the game and don't really see why I should give out my items just being I'm leaving for a while. Like SirHartlar said, there's no guarantee they'll ever return the favor, or if they'll even still be your friend when you come back, or still be playing when you get back. I'll give out stuff still just not if I'm "leaving".
Price varies around 3M give or take 100k or even 200k. I haven't seen 2.7M ever, but I got mine for 2.8 because they seller had bought it really cheap. I'd try seers in Trading Worlds like 6.
It was a "hidden update" . Magics are quite slow even at level 99, and when cutting Yews you get more gp/hour. So I would go with Yews especially at your level.
Like I said previously, it's all based on your activities. If you're skilling like alching, of course you get more randoms and thus increasing your chances of getting a mime. If you always just walk around, merchant, chat, even combat gives less and it'll seem rare. And in the end, it's all luck.
Yeah that's a great emote. The rarity depends on what you're doing imo. I got ~4 mimes in the past 3 days while power wc'ing to level 99. Almost have everything, just missing mask.
Check out the Runescape Knowledge Database They have all the quest rewards, and even in categories: http://www.runescape.com/kbase/viewarti ... le_id=1765 PS: Questions go in Help/Advice Forum :).
No while you're assisting someone, you keep the Assist Window up and cannot move or do any skills. You can only chat and move your view around to keep from getting logged out. Also once you get 30k experience from it, you can't assist at all. Not even for 0 exp.