Table 2.

Examples of different categories of NUPM tweets with website links.

Category	Tweet content	Description
Lifestyle: individual user	RT @[ANONYMIZED]: "I wanna try xanax" Me https://t.co/XpTErzo6W6	Retweet of individual user promoting drug abuse initiation with link to video where user shows pills in hand
Lifestyle: individual user (polydrug mention)	RT @[ANONYMIZED]: Prescription drugs, show me lovePercocets, Adderall, Xanny bars, get codeine involved	Tweet describing promotion of polydrug abuse with several different therapeutic classes
Lifestyle: music	RT @[ANONYMIZED]: Go do some xanax, crank this shithttps://t.co/9N72OXO0rs	Retweet with link to streaming hip hop song promoting prescription drug abuse behavior
Commercial: individual seller	Check out Xanax Pill Necklace http://t.co/IfeGqe01t4 via @eBay	Link to eBay seller account for a Xanax pill bar necklace that promotes NUPM lifestyle
Commercial: company	Over the counter? #Adderall?#Xanaxsubstitute #anxietynaturalremedy? #herebalremedy http://ow.ly/MsyqQ	Tweet linking to website selling nutritional supplements that are advertised as substitutes to Adderall and Xanax
Online pharmacy–related link	RT @[ANONYMIZED]: How to Buy Valium Online http://t.co/qkDY8ZJ08W	Retweet with link to marketing affiliate that included a link to an illicit online pharmacy