Spelling 101..I'll add one...

[manning]

all right... not... alright

This may explain it. Kind of a gray area.

 

[manning]

When to "a" and "an"

Use "a" when the next word begins with a vowel

Use "an" when the next word begins with a consonant

 

[Todd&Copper]

all right... not... alright

From dictionary.com (bolding mine):

The form alright as a one-word spelling of the phrase all right in all of its senses probably arose by analogy with such words as already and altogether. Although alright is a common spelling in written dialogue and in other types of informal writing, all right is used in more formal, edited writing.
http://dictionary.reference.com/browse/alright

I'd say the writing here is quite informal.

 

[Todd&Copper]

My favorite is "WALLAH" for voila. Took me quite some time to figure out what the poster meant [I thought perhaps they were a bit confused about a city in Washington state].