21. The computer-implemented method of claim 17 further comprising: g) accepting, by the computer system, from the advertiser, an offer for association with the selected suggested additional media property.
21. The computer-implemented method of claim 17 further comprising: g) accepting, by the computer system, from the advertiser, an offer for association with the selected suggested additional media property. 23. The computer-implemented method of claim 21 further comprising: h) determining, by the computer system, a spend estimate using the offer and viewing information associated with the selected suggested additional media property; and i) presenting, by the computer system, the spend estimate to the advertiser user.