If you insert an image into an essay or a page with the insert media function the image will always be shown at full width. In order to get a floating image with a smaller size you would have to add it manually in the HTML editor. To make this easier I have created this shortcode plugin. It allows you to select and insert an image and configure how it should be displayed.
After a new website has been added to Google Webmaster Tools, Bing Webmaster Tools or Alexa these services wants to verify that you are really the owner of the added site. Therefore a special ID will be generated. This ID must either be uploaded to the server as a HTML page or a special meta tag must be added to the HTML pages. Because I prefer the use of meta tags I hae written a small plugin for Koken that generates the necessary tags. This plugin can be downloaded from here and installed in Koken. The installation of plugins is documented on the Koken-Website.