Dont's

In general, attempts to trick engine crawlers fail miserably and will usually affect your natural rankings detrimentally. Avoid all activities described below.

1. Never Seek Quick Fixes: If a service promises too much, it probably will not deliver. Products that promise millions of unique visitors or services that email millions of "eager" recipients are anything but quick fixes - they are immediate problems. Subscribing to these services usually results in search engine banishment!
   
   
2. Avoid Link Farms: Link farms are sites that link to numerous other sites with the hopes of improving page rankings. Beware: link farms spell immediate trouble - so avoid them at all costs! Engines like Google interpret link farms as spam and actually remove participating Web sites from search engine indexes.
   
   
3. Avoid Splash Pages: Flash and heavily graphic introductions prohibit engines from crawling your site. Because crawlers work best with text links, splash pages are very troublesome. A good rule of thumb: always keep your most valuable and compelling information up-front and in text. Bob's Big Boy (www.bigboy.com) uses a splash page and, as a result, prohibits crawlers from reaching the body of the site.
   
   
4. Avoid Frames: Never use pages with frames. Frames are too complex for the crawlers and too cumbersome to index.
   
   
5. Avoid Cookies: Never require cookies for Web site access! Search engine crawlers are unable to enter any cookie-required materials; similarly, crawlers are unable to enter or index secure pages (https, password protection, etc).
   
   
6. Avoid JavaScript when Possible: Though JavaScript menus are very popular, they disable crawlers from accessing those links. Most, well-indexed Web sites incorporate text-based links primarily because they are search engine friendly. If necessary, JavaScript should be referenced externally.
   
   
7. Avoid Search-Box Navigation: Never rely on search boxes for site navigation; engine crawlers are incapable of entering text into search boxes and will be unable to find those pages.
   
   
8. Avoid Redirects: Search engines frown upon companies that use numerous Web sites to redirect to a single Web site.
   
   
9. Avoid Internal Dynamic URLs on the Home page: Though many sites incorporate internal dynamic links, they should not incorporate those links on the home page. Engine crawlers are currently ill-equipped to navigate dynamic links - which often pass numerous parameters using excessive characters.
   
   
10. Session ID's: Do not leave URL session ID's on for engine crawlers; they will be unable to access and index your site.
    
    
11. Eliminate Pop-Up Ads: Search engines frown upon pop-up advertisements - especially when they occur on the home page! Eliminating all pop-up ads will win favor with the engines and make your site more crawler friendly.
    
    
12. Eliminate Hidden / Invisible Text: Search engines immediately recognize hidden text and consider such practices to be "cheating."
    
    

For more information on natural search best practices, see Google's Webmaster page: www.google.com/webmasters.