Myth #1: All Meta Tags Are of Equal Importance
Some Meta tags are useful while others are not. I have stated this many times. Search engines are relying more and more about what is on the website than what the tags are telling them. The description tag is used by some (but not all) search engines. The same goes for the keyword tag. Keyword tags are used more by spammers and people using software to find you as a link partner than the search engines. In my opinion, the only tags you should concentrate your efforts on are the robot tag and the description tags.
Myth #2: You Should Submit Your Site to Search Engines Weekly or Month
Honestly, I nevër submit any site more than 1 time and sometimes I don't even do that. If you submit your site once, you're good. The engines will come back on their own. You can sometimes speed up the process of getting your site indexed by linking it to a high traffïc or high PR site. The search engines will find the URL to your site and index it automatically.
Myth #3: SEO is Too Expensive
Actually, SEO is probably the most cost effective förm of online marketing. Organic SEO is cheaper to set up and maintain than a PPC campaign or banner advertising. With PPC and banner advertising, you pay for clicks or impressions. With SEO, all clicks are Frëe. You simply pay for the set up and monitoring of your site's pages.
Myth #4: Pay Per Click is More Effective Than Natural SEO