Um, while im glad yall are enjoying your reception here, there is a bit of a learning curve.
Sbd are supposed to trade at a dollar.
They were created to take volatility out of a merchant taking them in exchange for goods.
Rather than have to change prices every time sbd goes up or down, they are supposed to be pegged to the us dollar.
This peg is currently broken, purportedly by korean speculators.
This works in the authors/creator's favor by increasing the value of posts, so interest is pretty low in fixing the peg at this time.
Eventually, they should go back to 1usd and stay there.
When? Nobody knows.

Steem is free floating and should eventually rise in price to some equilibrium that makes sense to investors, whatever they decide that will be.
If it is adopted as a currency because it can be transfered anywhere in the world in three seconds or less for free, then the sky is the limit.

'Supporting the platform' requires powering up steem into steem power.
This demonstrates that you trust steem not to collapse in the next thirteen weeks.
Steem power also determines the size of your vote.
More steem power, the larger the votes you can give out.
You could self vote your steem power, but that shows a lack of class, imo.
It is quite profitable, though.
In the short term, you can vote yourself a tidy roi, but you will alienate the more knowledgeable portion of your potential audience by doing so.

So, if you really want to support the platform, trade your sbd for steem on the internal market, power it up, and start voting for folks that vote for you, or that strike your fancy.

Welcome to steem!