I once had a client who insisted the use of Grammarly.com in checking the grammar score of my work. I am not a fan of proofreading tools. For me, the best proofreading tool is our pair of eyes. I don't use Grammarly.com because it has recommendations that bend the writing style or personality of the writer. There are cases when my train of thought can be best expressed by using the passive invoice instead of the active voice. When Grammarly detects sentences in the passive invoice, it lowers the score of the article and prompts you to change it. Now, if a client, who is not a writer in the first place, is an avid fan of Grammarly, you are torn between satisfying your client's avid-ness (if there's such a word) to Grammarly and bending your own "persona" in writing. I really believe that while a content writer must really satisfy his client's requirements, he should not take his "persona" in writing for granted. Sacrificing your style in writing is similar to opening the doors for a writer's block. When a writer's block hits you, it affects your ability to deliver on or before the deadline. Here's my question to forum members who are looking to hire article writers. Do you prefer your writer to pass Grammarly's standards by hook or by crook or you'd rather let him do his thing for as long as there are no obvious grammar errors?