Why Is This Simple Grammar Rule SO Difficult?Mark Perryupdated Jul 05, 2010TweetAt GET.com we maintain complete editorial integrity on our content & provide transparent & unbiased information. Companies don't pay us to include their products although we receive a compensation when you successfully apply to products from our partners. See how we make money here.At GET.com we maintain complete editorial integrity.I've started keeping a collection of writers (blog commentors, etc.) who misuse the word "it's" (contraction for "it is"), instead of its (possessive), here are seven examples from just the last several weeks: 1. Shale gas has it's skeptics: they're hesitant about it's prospects based on economics and environmental factors. I don't work in the shale gas industry and therefore don't feel qualified to forecast it's long-term prospect. 2. If oil was so rare in the US, then why is 95% of it's land and water off limits to drilling? 3. My point is that the OECD index uses stock market levels as an input to derive it's levels. 4. Tithing has lost it's promise 5. I suspect my laptop is having trouble keeping up because of it’s GB’s and MB’s. 6. And while you’re at it, do the same with “Price Theory and It’s Applications” 7. I despise Walmart, not for it's anti-union stance, but for it's overall philosophy and what it's done to it's supply base. Maybe I'm just a complete supercilious grammar snob, but why do SO many seemingly intelligent people have SO much trouble with a basic grammar rule that is SO simple? If you didn't learn about this rule in "grammar school," perhaps a simple five-minute remedial review is in order, you can start here. Editorial Disclosure: Any personal views and opinions expressed by the author in this article are the author's own and do not necessarily reflect the viewpoint of GET.com. The editorial content on this page is not provided by any of the companies mentioned, and has not been reviewed, approved or otherwise endorsed by any of these entities. Opinions expressed here are author's alone, not those of the companies mentioned, and have not been reviewed, approved or otherwise endorsed by any of these entities.