My English is not very strong, I am trying hard to make sense... ;)
One of my clients is a web site conception agency. They finally woke up and want to offer
web site promotion to theyre clients. They need to know how much traffic boost they can expect from different packages. My results vary a lot from 230% to 4290%. I all depends from where we start and what tactics we can use. I am curious to know some other averages because my samples are quite limited.
Here are my averages from 42 French Web sites mostly about art and culture or professionnal training. No other external promotion is used in any case.
Basic optimisation of real pages Yahoo/Inktomi/Looksmart/payments done. Major SE, topic related portals, local directories, ODP and newsgroups.
Average results in 3 months. 374%
Reinforcement by link exchange prospection and java or frame redirect entry pages hosted on the same domain.
Average results in 6 months. 722%
To much of a Newbie to use Cloaking yet.
If any one can point me on global stats about SEO results I would be a happy puppy!