Two items:

1) I welcome corrections. We do not always use proper grammar. When folks point out problems, we will make an effort to correct the piece.

The ad in question was created by one of our distributors and approved by us. At this point, they may or may not make the change.

2) And for those who do not understand the hubbub, read the note from one of our editors:

Quick, quicker, quickest is correct.

We have two forms of comparatives--more/most and -er/-est.

Most adjectives and adverbs of one syllable form their comparative and superlative degrees by adding -er and -est.

Some adjectives and adverbs of two syllables use -er/-est and some use more/most. Check the dictionary to be sure.

Adjectives of more than two syllables and adverbs ending in -ly usually form their comparative and superlative degrees by more/most.

The logic is that a word that's already long is too long for comfortable articulation when it's burdened with another syllable.