I read a great article on searchenginemarketing.com. Basically, this question comes up a lot. How long does it take to see results from SEM.
I answer it as follows: It depends.
1. How established and how long have you had your domain and current site?
2. What type of resources do you have in-house to write text and/or manage PPC expenditures?
3. What type of viral efforts do you have in place already?
Based on the answers of the above I can generally say that I’ve seem some companies get results in 3 to 4 months, but I would argue that is rarity, not the norm. Most firms, with at least a bi-weekly update of content and some resource who is managing and segmenting their lists for e-mail communications will see good, quality progress in about 6 to 9 months. If you are starting, completely from scratch I would say, be prepared for at least 9 mos. and up to 1 full year of effort. Hope this helps.