SEO is a critical part of getting people to your site and these WordPress plugins help you acheive your goals quickly and easily.
HeadSpace2
The most important on page factor in SEO today appears to be your title tag. HeadSpace2 allows you to easily control the layout of all title tags on your WordPress blog. Along with title tag management you can control all of your description tags which, while not very important in SEO, can be very important in attracting people to click your site in the SERPs.
Redirection
What happens when you change a post’s URL? Do you know when your visitors are getting 404 errors? With Redirection you get everything you need to easily redirect posts and log any 404 errors.
Meta Robots
Until Meta Robots there hasn’t been an easy way to keep WordPress from allowing the indexing of certain pages on your blog. Now you can easily prevent the indexing of any pages/posts on your blog.
SEO Slugs
Including works like “in” and “the” in your post slugs doesn’t really do your SEO any good. SEO Slugs automatically removes all of these types of words from your slugs.