This has been on my mind for some time now.
We are always on about the "Search Engine" results. Yet few actually are aware of how Search Engines (SE) work.

I am aware of the very complex algorithms that the SE use and do not pretend to understand how they work. I do know what they do though! They sort out the wheat from the chaff.

That being said, I recommend the KISS principle in web site design work.

Most people using the internet SEs are looking for information. The SEs are about information. They rate websites on information. So websites should contain information or CONTENT.

In Real Estate the 3 most important things are position, position, & position.
In website design the 3 most important things are CONTENT, CONTENT, & CONTENT.
Without good CONTENT you will be largely ignore by the SEs.
CONTENT needs to have all you keywords that you used to load into your Megatags in the visible text of your page(s). Each page needs its own keyword loaded CONTENT relevant to the subject of that page. I'm not talking about keyword spamming, I mean real and relevant CONTENT.
Unfortunately this means work on compiling and editing text, yes, boring but absolutely necessary.

So, now we have our CONTENT. There is a 4th most important thing. It is NAVIGATION.
SEs need to be able to find your website and ALL the pages it contains.
Basically the SE algorithms cannot deal with those sites with FRAMES and/or FLASH. The easiest way to deal with this is to not have Frames or Flash. Frames may be nice for visual navigation but the SEs cannot get past you home page. Flash confuses the algorithms and the SEs cannot move past a page with Flash.
Now there are ways around this with navigation hyperlinks inside each page HTML and a robots.txt and/or a sitemap.xml file in the server root directory.

Many web designers have never even heard of these files, yet they continue to use WYSIWYG editors to create their "works of art" with features that are used just because it seems to look good and they are available. They think it looks professional. It may impress the client, but not the SEs. What do you say to your client in 4-6 months when you delivery them their website statistics (you do don't you?) and their hits are negligable. Do you then offer them a SEO service as an extra cost when it should have been included in the original design work.
So NAVIGATION structure is critical for SEs to find your pages.

Now, back to KISS. You may have heard it before, or by now should have guessed what it stands for.