1. Keep a document (google docs?) with all the tidbits of information you pick up.
2. Fix duplicate content by preferably eliminating it, by use of the noindex tag or by using the link canoniclization tag.
3. Flash is starting to get better indexed for search engines, but don’t use it for textcontent.
4. Use unique alt image tags for all product images (not necessary for logo or boilerplate).
5. Immediately answer your users searched for question in order to reduce bounce rate.
