Good one -- took me three reads to parse it. (And I think it's missing a "that" after "suggest.")
To answer HarryT's question, people get confused with "it's" vs. "its" because of the form of the nominal possessive in English (apostrophe+s), so they want to use "it's" for a third person singular neutral possessive, when properly it is the contraction of "it is." (They forget, for example, that "his" has no apostrophe.) Some people, on being told that they may not use "it's" as a possessive, then drop the apostrophe altogether for both words.
And then some folks just type quickly, and on a keyboard without tactile feedback, fail to notice that they've missed an occasional punctuation mark.
