It still seems overvalued. What would you rather own? Snapchat -- which, after dropping 23% today has a market cap of 21.5B. Or ALL of... Yelp - 2.21B GoPro - 1.21B FitBit - 1.38B Groupon - 2.01B Twitter - 13.59B Sonic - 1.27B ...for a total of 21.67B
I would most certainly buy $SNAP over every one of these companies. People don't get it. For everyone between the ages of 13 to 26, Snapchat is their only social network, their only messaging app, their go to camera! That is inherently more value that any of those companies combined.
If just punting out and buying a few units, yea why not.
But if you are working towards building a reliable portfolio, I would recommend spreading/indexing your monies.
And Snap is something I would personally not touch, maybe not even with an index, not just yet.