Ok, I've been hanging out in theses forums for a while now. I have 10 or so Arbi pages up, and a YSM account, an Adwords account, and a 7search account. I've read posts saying to throw thousands of keywords into an adgroup, and posts saying to keep it down to 20 longtails per adgroup.
My question is, what are the pros and cons to each method?
My question is, what are the pros and cons to each method?