Header and Footer
Header and Footer lets to insert whatever you need in to the head and the footer parts of each blog page. Its main purpose is to add various scripts to track the access to the blog (such as Google Analytics or MyBlogLog) and to add metatags to the header section (like the ones required by Google Webmasters Tools).
To insert something you have only to copy and paste the code, no need to install 5 different plugins for MyBlogLog, Analytics, Google WebMaster, AdSense-Analytics integration. Clearly, if you aren’t able to copy and paste, keep on using the specific plugin for each service… 
Download
Header and Footer is available on WordPress Plugin Directory at this URL
and if you find it useful, don’t forget to give it a vote…
Usage
All posts about Header and Footer can be found under the tag “header footer“.
It’s so simple that this paragraph is not really useful, but… here a screen shot of the configuration panel with values I’m using in a my blog.
There are themes which fo not have the “wp_footer” call, or have the footer crypted: check the source of generated pages to see if the code you configured is injected or not. Other plugins that add such kind of codes in the footer may have the same problem!
The image below is the source of an internal page of a my blog: the Analytics code is there.
Versions
Really there is nothing to say at now…
I'm Stefano Lissa. 10 years ago I was building web sites for my pleasure. Blogs didn't exist, web content systems were ugly, hosting really expensive. And my student pocket was empty.