interesting read. I think part of the "alot" problem is that "a lot" can mean two things. Technically "a lot" refers to a open space, often used to park vehicles (a parking lot) or to point out the lack of something in an area (a(n) empty/vacant lot).
"a lot' also has been commonly used to express a large amount of something. "that is a lot of beer cans". The problem comes into play when you know of both meanings. "that is a lot of beer cans.", does this mean there is an empty space full of beer cans or simply a large amount of beer cans with no specific location?
Those with intermediate knowledge of the English language (I.E. educated Joe Blow) will come to this problem and ponder as to the correct course of action. "a lot" seems better suited to describe a place or thing because "lot" is what the place/thing is and "a" is used to support it but is not necessary (I.E. "that lot", "the far lot"). When using "a lot" to describe an amount or quantity, you cannot use it without the "a" unless you want to use confusing and incorrect grammar like "we had lot of beer this weekend". So it, at least a little, makes sense to merge "a lot" into "alot" when describing a quantity or amount.
Just my two cents. I know it is wrong according to "proper grammar" but it at least makes sense to me. I'm no English teacher though so I may be wrong.
Also, I will now picture that creature whenever I read alot. make of that, what you will.