(Re)Design for evolution, not revolution
When you are designing your pages, or have them designed by someone else, it is good to take the following advice in mind:
Design for evolution, not revolution.
The reason behind this is simple. Google doesn’t like big changes. If one day you are no longer pleased by your design, and decide to revolutionize the way it looks, you might get punished in the search results. By “revolutionize” I mean big changes in the way your HTML code makes up the page. An example might be going from a table-based layout to a layout that is not table-based.
If you are already a well-established website, you might get away with this. If you are not, you better not take the risk. I know, because I’ve experienced it first hand. Not that the change was that big, but apparently big enough to trigger a flag in google’s algorithm.
There are a few tricks to avoid catastrophes and they fall into two categories.
First, separate content from style. Do this by using a separate style sheet and put as much in your style as you can. Often, if you want to change the look, you can do this entirely by changing your style sheet. A good example of this is CSS Zen Garden. Eg, if you have a header image or logo, consider placing the image as a background of the header. That way you can change the look by replacing the image reference in your style sheet. There is no resulting HTML change on your page and you don’t risk being punished.
Second, plan possible changes. What new features are there you might want to implement in the feature? Maybe a search function, or a poll? These things don’t require you to turn your pages upside down inside out. One div element might be enough. If you have planned your design with expansion in mind, finding a place for it shouldn’t be a problem. Positioning some elements a bit lower can be done easily through your style sheet. If you have a sidebar, some new things can find a place there.
The bottom line is: think ahead. Small players in the field have it difficult. No reason to make it even harder.