Twitter cards: social sign-up 2.0 Door EmailGarage op 24 juli 2014 in Email Marketing, Opt-in, Social media “Use social media to get new subscribers”. It’s possibly not the first time you have come across that tip. In fact, most of us will probably have promoted their subscribe page via a Twitter post, implemented a form on Facebook or posted a subscribe link on LinkedIn. But let’s face it, when we look at the percentage of new subscribers, social media tend to account for only a fraction of all traffic. One year ago however, Twitter launched something that makes it easier to subscribe via social media: Twitter lead generation cards.