Web Design v Web Marketing: These are two different things. When you search the web as much as librarians do (how many reference questions an hour x 40 hours?) you get a little cranky about web design and readability. If you have any control over your web site (not all of us do and we understand that), please read as much as you can bear about web site readability (which is different from usablity, another important factor to consider). It’s not at all hard to search “web mistakes readability or design or mistakes” online. The latest one I’ve looked at is this. It has lots of examples and is itself easy and fast to read, but there are hundreds of others. You’ll get to know the guru of Usability, but feel free to find your own. And then there’s Edward Tufte for those who are artists at heart.