I’ve been including my own header-stuff.php file in my template headers which uses a default blog meta description for home page, in some cases modifies the meta desc for search result pages, otehrwise it uses the post excerpt for the desc (which I make sure I always fill in so a default one isn’t generated).

The http://guff.szub.net/2005/09/01/head-meta-description plugin is great for adding default meta descriptions that are relevant to your pages. Then I personally add the custom field “description” for pages that I want especially well optimized. My formula is to repeat the search phrase twice within 156 characters (google), and use a sales pitch sounding phrase so that you get good clickability.

When I was searching for this topic, I searched for “Wordpress Javascript” - so I consider that the title should be “Wordpress Javascript Plugin” so that you at least have those words “Wordpress Javascript” next to each other. And then repeat that phrase a twice in the opening paragraph and scattered around the rest of the text of the page.

Then I suggest that instead of an <h2> you use an <h1> - wont be much difference, but might as well give the title that bit more emphasis for Google.