Twitter could help users monetize by adding a Flattr-like micropayment system where you could "tip" a tweet instead of just liking it. Likes could be more than

Twitter could help users monetize by adding a Flattr-like micropayment system where you could "tip" a tweet instead of just liking it. Likes could be more than just social currency. Twitter could make money off the float of money in tippers' and tippees' accounts. This might lead to more meme content theft because people would want to get tipped for other people's popular content. Or Twitter could allow content creators could charge a subscription fee to be followed. Creators could allow their tweets to become public after a configurable number of hours so non-subcribers could see what they're missing.