In relation to gaming of social media and reliability of alt metrics, this article describes "robot tweeting" (automatically generated tweets) specifically in relation to items deposited in repositories like ArXiv
http://arxiv.org/pdf/1410.4139v1.pdf - may be worth a specific mention
Haustein et al 'Tweets as impact indicators: Examining the implications of automated “bot” accounts on Twitter'
In relation to gaming of social media and reliability of alt metrics, this article describes "robot tweeting" (automatically generated tweets) specifically in relation to items deposited in repositories like ArXiv http://arxiv.org/pdf/1410.4139v1.pdf - may be worth a specific mention Haustein et al 'Tweets as impact indicators: Examining the implications of automated “bot” accounts on Twitter'