If you really look at it , 5 million steem power is a good start to get more people onto this amazing blockchain and I would do exactly as what I am doing now :-
1. Promote steem more and with the use of delegation to incentivise those who are able to influence a larger audience of people to join in the blockchain . The key of success of any social media today is to have influencers to get on board and bring their followers in. Most influencers are reluctant as they are already in their comfort zone and afraid they will not be able to reach the same authority as they have build so hard in Youtube or Instagram or even Facebook.
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2. Run more events and fund individuals to speak at blockchain events and talk about steem. A few months back we created our own event and managed to get into the Local Daily Newspaper which created a lot more curiosity and making aware that STEEM is here to stay
3. Invite developers to come and create more dapps based on STEEM blockchain. DAPPS like Musing, DTube and even DSound are made from developers who wants to contribute to the community to make STEEM adaptable for almost everyone. With huge delegations like 5 Million SP , we are able to not only fund hackathons however we are also able to create more hype for developers to actually get interested in creating more dapps on the steem blockchain
4. Support more initiatives which focus on retention. Recently there have been a huge number of vloggers who started their vlogging journey with the rise of a special interest project by @dcorporation where it gets everyone an opportunity to get their video upvoted. This alone is an excellent method of getting more people interested in STEEM once more.
5. Invite more businesses to embrace this amazing platform. This would encourage magazines , digital news, agencies to see that advertising is not the only source of income. With the blockchain, the possibilities are endless. What @oracle-d is doing is truly a step ahead as they are actively approaching businesses to make full use of the communities in STEEM to generate content. Imagine once we hit critical mass of 1 billion users ! That would indeed be an eye opener for everyone !
These are just 5 of the many things which I would do with 5 million Steempower ! Its all about growing the ecosystem, If I had that much of SP, it would meant that I would be a large stakeholder of STEEM, of course I would want to see this ecosystem grow instead of just milking it dry.