All in One SEO Pack
http://wordpress.org/extend/plugins/all-in-one-seo-pack
Almost every Web site owner is concerned about search engine optimization (SEO). Good SEO practices help the major search engines (Google, Yahoo!, and Bing) easily find and cache your site content in their search databases so that when people search using keywords, they can find your site in the search results. The All in One SEO Pack plugin helps you fine-tune your site to make that happen; it automatically creates optimized titles and generates HTML keywords for your individual posts and pages. If you’re a beginner, this plugin works for you right out of the box with no advanced configuration. Woohoo! If you’re an advanced user, you can fine-tune the All in One SEO settings to your liking.
WP-Print
http://wordpress.org/extend/plugins/wp-print
WP-Print is an easy-to-use plugin that provides a clean, printable version of your blog posts and pages. Unless your theme has a specialized stylesheet for printing, posts and pages print rather messily. WP-Print strips most of the style from your theme design (images and formatting, for example) and outputs a clean print of your article with black text on a white background.
You can configure these options for the plugin:
Print Text Link for Post: This option configures a Print This Post link.
Print Text Link for Page: This option configures a Print This Page link. ...
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