Plus one button from Google is launched today. Currently, there is no official Word Press plugin yet (Neither for other public blogging services).
But don’t worry, you can grab the code from Google and place it on your webpage or blog. Plus, there’s some advance functions that you can play with including Include count, Parse, JS Callback function and URL to +1 (this is for static sites). Details of the API can be found here. That’s it, simple and easy for a single page.
But if you want it on the template, or elsewhere pages on your Word Press site, you need to modify a little bit more. This is done by
So try it out and see if this is really going to beat the “Like” button, although Google stated it wasn’t.