Janet Meiners Thaeler points out a few common mistakes made with SEO..
Here’s her top five list of some negative or deceptive SEO practices, based on her own experience:
1. Putting too many keywords on your web site. If a website repeats words or phrases so often that it’s unnatural to read, it’s called keyword stuffing and could get the site penalissed. Some sites hide keywords in the text or code of the site which have nothing to do with their site. They might use the same words over and over but otherwise give very little information and no news value. You might find web sites that have hundreds of keywords in the footer or bottom of a web page – this is ineffective and your SEO company should not employ these techniques.
2. Overuse of bolded text or too many links. Not only does this look terrible but it also doesn’t build trust with people or help your search engine rankings over time. Again, while it’s important to create search engine-friendly content, writing for people will be better in the long run.
3. Hidden links. Sometimes these links are hidden in the code of a site or in the footer of a website. They code the site to hide the links or they are the same color as the background so you can’t see them. The links are often unrelated to the site but even a huge list of related links that are hidden can hurt you. My blog was recently spammed so that every time it loaded there were links to viagra sites. You couldn’t see them but they slowed down my site considerably. I got it cleaned fast because a friend of mine recently had his site banned by Google for the same problem.
4. Complicated link schemes. Google can detect unnatural linking patterns and there are many variations of link schemes. An example is that overnight your site has thousands of links when you did nothing to deserve those links. Some people build programs that add links automatically or that create new web pages or blogs (splogs) full of spam content and links.
5. Multiple domains or subdomains with essentially the same content. These sites or pages have practically the same information but with different keywords. Here’s an example I saw when I was looking for a locksmith. When I type in a city name the same site comes up again and again. The only difference is they have a different domain for each city or state. They are not regional but contract out to various cities. The page for Denver is the same as the page for Las Vegas, only with the words “Denver” swapped out for “Las Vegas.” There are many variations on this tactic which may work short term but long term they are risky.

