There are a few things you must avoid (or fix accordingly) when optimizing your site for search engine submission. These include the following and more:

• Dead Links - As search engines index your entire site by crawling through hypertext links, you must make sure you check for dead links before submitting.

• Graphics and Image Maps - Search engines cannot read images, be sure to include Alternative Text tags.

• Frames - Many Search engines aren't frames compatible. Meta tags and the <no frames> tags are important in this instance.

• Password protection - Most search engines cannot index content available behind a password-protected page unless you make special arrangement to provide password access.

• Dynamic Pages - If your site uses database generated requests or CGI scripts, consider submitting pointer pages with the search engines.

• Search Engine Spamming
  Many sites are employing tactics that could get them kicked out of the search engines, some don't even know it!