Skip the very long collection quests... but otherwise do everything else.

I havnt hit 70 yet multiboxing, but Ill explain what I plan to do:

I use Joana's guide, and skip all the 10+ item collection quests... But helping offset that a bit is I can do the "Group" quests that are offered as an option.

Solo using Joana's guide I hit 70 and have yet to touch shadowmoon valley... So 5boxing with skipping quests, I plan to just touch into shadowmoon for 1/2 a level or so. ( which is still in the guide )