In an email to advertisers, Reddit said most of its 330 million monthly active users access its website on mobile and 80 percent of them don't go on the platform on desktop. Also, app users now account for 41 percent of the total time spent on Reddit across all platforms. Taking those numbers into account, you could says that launching sponsored posts on mobile was only a matter of time for the social network. Giving advertisers the choice to advertise via in-app promoted posts could mean more interested parties and more ad money for the company. Whether this move will be well-received remains to be seen, though. As Reddit chief Steve Huffman once said in an interview, Redditors "don't like being bullshitted."