Here is a great tool for staying on top of the SEO industry: http://seo.alltop.com/

Randfish from SEOmoz has a descent article on top 12 mistakes made by newbie’s to SEO/SEM. In it, he list’s #6 as being the failure to include a sitemap. Specifically, an XML based sitemap, that is then submitted properly to Google using their webmaster tools.
 
Creation and submission of an XML sitemap is a service that Quarkis proudly offers to our clients. So naturally, we were pleased to see this listed. Specifically, Randfish says:

Maybe it’s my fault for previously recommending that webmasters don’t submit Sitemaps. Let me just go on record again as saying that I have come 180 degrees on this and now completely endorse sitemaps for nearly every kind of site. In every instance we’ve seen them used properly, they’ve added significant boosts in search traffic over a very short period. If you want an easy win, and haven’t yet invested in the sitemaps XML protocol, go do it.

 So, there you have it. Don’t just take our word for it, do your due dilligence online and research these kind of issues before making any decisions. We’re just helping you a lot in the decision making process.

There is a lot of lingo exclusively used amongst SEO/SEM professionals. It can sometimes get confusing trying to make sense of all the jargon.

Here is an A to Z list of some of the most common terms in the SEO/SEM industry:

Navigation:

0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Glossary:

0 - 9

Some poorly developed content management systems return 200
status codes even when a file does not exist. The proper
response for file not found is a 404.

See also:

• 
  W3C HTTP 1.1 Status Code Definitions