Nothing Much, I believe there are some still going - it's just about being in the Right place at the right time.
I am not a big fan of drop parties.
1 in a million
The most expensive drop you can get on runescape is the corrupt dragon battleaxe at 3.9m
bones
They will attack you, and they can drop loot. see this page: http://www.tip.it/runescape/index.php?rs2monster_id=238
What do you mean?, runescape is still there. If you wish to visit runescape go to "runescape.com"
No.
hill giants and hobgoblins drop them sometimes
Right click the rocks and say "drop".
To drop items, you go to your inventory, right click on the item you want to drop, then use the drop command.
check out the link
It has no use. You can drop it.