Facebook has decided to start charging users $1 to send messages to people they aren't friends with. The social networking site insists that the fee is for a "small number of people" and is just being tested in the United States for now.

The fee is designed to control unwanted messages like ones from people you don't know or dreaded spam according to the Facebook blog post that the company posted this week.

Click here to see the entire blog post.

"Several commentators and researchers have noted that imposing a financial cost on the sender may be the most effective way to discourage unwanted messages and facilitate delivery of messages that are relevant and useful," Facebook  said in their blog post.

The trial run has many people worried that the low fee will allow advertisers who are happy to pay the dollar to continue sending spam to their inbox.

The company also stressed that the new feature will allow users to safely send messages to people they're not currently friends with. The company gave an example like if you wanted to try reaching someone you heard speak at an event to discuss the presentation or a job opportunity, you could use the feature to send a message to their inbox.

Facebook has updated their filtering system as well to have just two major settings: "Moderate" and "Strict." Moderate for example will allow more messages from those who are friends of friends and groups. "Strict" won't allow any messages from people who you aren't close with. Before the update that started this week, messages from people you aren't close to would just be placed in the "Other" folder. Now users will be able to pay a dollar for that message to appear in your "Inbox" folder.

Users are also worried if Facebook is charging people just to send messages, they may start charging people to use the site period. While the company has yet to comment on that worry, it is a legitimate question since most people have dismayed the idea that Facebook would charge for any part of their service since being introduced in 2004.  

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