From Utah SEO:

There’s a great discussion going on at Sphinn about overrated SEO tactics. Some common ones mentioned are:

• buying multiple domains and redirecting them to your site
• over use or over importance of XML sitemaps
• meta-keywords
• keyword saturation

Make sure your are not spinning your wheels or spending money on tactics that won’t make much of a difference.

Check out the discussion here: http://sphinn.com/story/179982