Feedjit.com offers 4 widgets for bloggers and webmasters.
The most popular feedjit widget(which you may have seen on other blogs already) is the "Live Traffic Feed" Widget.
If you are a Blogger Layouts(XML Blogger) or TypePad user, the readymade widget on the site will install the code on your blog in a few clicks. Other blogs and websites will have to copy-paste the code from the site into their template.