Blogger: Sidebars Display Below Posts Fix

My Sidebars are at the Bottom of the Page, Please Help!
One very common problem I encounter while browsing the Blogger help forums are people with their sidebars displayed below posts. Everything will be fine for a while, then suddenly poof your Archive, About and Follower gadgets end up at the bottom of the page. To many this appears a random problem with no apparent cause. Fortunately, it is avoidable and fairly easy to track down the issue.

The Cause of this Common Problem
As I'm sure most bloggers are aware, web pages are constructed with primarily HTML code. HTML requires opening and closing tags to compartmentalize a page usually with these tags <div></div>. Tag pairs define the contents of a given tag and established rules determine how those contents are displayed. Blogger extensively uses <div></div> tags to segment or divide a page primarily into columns. Most layouts come with either two or three columns each with it's own beginning and ending tag.