Beneath every user review on Steam is a prompt that asks "Was this review helpful?" and lets you respond with a Yes, No, Funny, or Award option. While it makes sense that user reviews can be flagged as inappropriate and those who write them have their ability to post more restricted, it turns out that even clicking on that thumbs-up "Yes" can get you in trouble, as 2,439 people who labeled a negative review of Warlander helpful found out...
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Over 2,400 Steam users had their accounts restricted for marking a negative review as helpful
Source: PC Gamer (opens in a new tab)