Two key points to remember (especially for those that are non-financial and/or crypto-newbies);
1> This market surge is natural given the explosion of interest over the last days, but is unlikely to be sustainable (as @zachamo notes) and could conceivably crash quite hard again as it adjusts.
2> If the price crashes this is neither (a) particularly bad for steem (short-term or long-term) or (b) the viability of steemit.
Just power for the course with new currencies, there will be a lot of volatility with a platform this innovative.
My advice - if you like Steemit in principle, keep using whatever the price movements for the next months, will be irrelevant in 6 months.
If you are planning on trading Steem, ask someone else for advice :P