With all of the predefined page elements that Layouts Blogger provides, that fulfill maybe 90% of the need for you to edit the template, there will be the 10% that they don't provide. Services provided by third parties - like guest books , or news feeds , or even visitor meters - won't be provided by Blogger, to everybody's liking. In some cases, Blogger / Google will provide one version of a given service - like Blogger Comments, Blogger Feeds, and Google Analytics - but their versions aren't the most popular in many cases. And some blog owners will develop their own simple applets, like the Cumulus / Google Translation Bar . Bloggers are like any people in any walk of life - they all want something different - better - or new.
What Blogger won't tell you