Here is a list of things you should know when you plan to get the services of an seo firm to do web search engine optimization for your website:

• Be wary of SEO firms that send you email all of a sudden.
• No one can guarantee a #1 ranking on major search engines results.
• Be cautious if the firm is secretive or won't clearly explain what they intend to do.
• Avoid SEO firms that talk about the power of "free-for-all" links, link popularity schemes, or submitting your site to thousands of search engines. These techniques are downright useless.
• Assess every SEO proposals with utmost care.
• Choose wisely. While you consider whether to go with an SEO, you may want to do some research on the industry first. Doing your homework is equally important.
• Know where the money goes.
• Talk to many SEO experts, and ask other tem if they'd recommend the firm you're considering.
• Finally, make sure you're legally protected.