Presearch yesterday launch keyword staking yesterday on their platform.I think this is a real innovative concept.Basically you can select a keyword by staking pre tokens and you can put your referral link.You can promote any sites,your reffral link and get credits for free.In google to do this you have to pay to google.The coin surge by more than 100% this week.
Still I think it has lot of potential to grow as the coins market cap is just 5 million now.As presearch has around million users.
Know more about keyword staking: https://medium.com/@presearch/presearch-launches-keyword-staking-35c6cced5733