Lets see, not long ago foxtrot pointed out the internet isn't invulnerable and large regions could be subject to temporary or permanent blackouts if they find vulnerabilities in the DNS system.
This small attack? Primarily against a managed DNS system, DDOS using the "internet of things". Still not an exploited vulnerability, but it took out major sites regionally for a significant time. And this is just small potatoes to what can and likely will be coming down the pipes... eventually.
PPS: Even if DNS lookups are overloaded you can come here directly by IP address if you keep it written down somewhere... (or "favorite" it)
http://204.144.128.249/
Unlikely that we will see anything affect us for awhile though. The risk goes up over time because this is the money shot vulnerability... you don't take out a site, you take out portions of the net.