Consider documenting your findings
Last week I spent some time with a new marketing manager at retailer XYZ.com, who just got hired. This is the 3rd marketing manager in less than 12 months - in our discussions it became clear that I was sharing with her some of the lessons her company had learned with previous marketing managers (this won’t work, this has been tried before, why don’t you try this, etc).
I think we all understand the value of industry-wide best practices, but there are site-specific best practices as well that are worth saving somewhere. Here’s an idea: create an internal blog at your company to talk about the lessons learned. Or even better, create a set of documents describing your experiments, the tracking methodology, the conclusion, and the future work - save them somewhere everyone can access, have weekly or monthly cross-functionnal meetings to share your progress.