Messages are posted claiming to offer gift cards for well-known brands such as Starbucks, CostCo or Argos. When users click on the links they are tricked into completing online surveys. Some of the scams earn affiliate income for the spammers behind them. Others are designed to steal your personal information or to charge your credit card or mobile phone bill. But its not just Facebook that is being troubled by survey scams, they are being encountered on Twitter read more in this article.”]
Source: https://grahamcluley.com/walmart-gift-card-survey-spam-twitter/