phpguru.org

Been doing some SEO recently for Web Support Solutions, and here are some words of advice that I've found. This is by no means authoritative, just some common bits of advice that I found. If you have more, post a comment.

• Content! Probably the most common piece of advice I've found. And not just content, but "relevant content". If your site doesn't have this, it won't be ranked highly for relevant searches.
• Using images in place of text for navigation. ie. Don't. Use text instead which robots can read and style them how you wish using CSS.
• META tags - Apparently not as weighty as they used to be. Still worth having as they don't exactly detract anything. According to one of the comments to this article, the description meta tag may be used by search engines for page listings, so it becomes somewhat more important. Perhaps not for getting a high ranking, but for conveying purpose to readers.
• TITLE attributes for images - ie use them. And be descriptive. I suppose it wouldn't hurt for links too.
• Page titles. Use them and make them appropriate to the pages content.
• Heading images, Use <h*> tags instead.
• Article exchanges (as opposed to link exchanges)
• Use a sitemap. This will apparently help the search engine robot to find pages. Not only that it's help to your human visitors.