Excite is a search engine, Yahoo is a directory - there are different ways to submit and considerations for each. We'll cover directories briefly and then concentrate on search engines. Directories Directories typically get their content by web site authors submitting their sites - You provide a category, site title, and description. You are then listed alphabetically, so if your site title is AAA Office Supplies you'll be listed before Zen Office Supplies. Everything is alphabetical when you're dealing with most directories.
All search engines are different.
They all have different algorithms that index your site. The number of times the keyword is mentioned in the page and title can make or break your listing. Include a few keywords in your Image ALT attribute, which is a text description of the image. Check out Search Engine Watch for some great info about search engines. Internet News Internet Investing Internet Technology Windows Internet Tech.