Just a thought: To ensure success, plan for failure
Ominous news from FiveThirtyEight.com
While it looks like the trouble at FiveThirtyEigh was transient, one wonders what fallback plan site organizer Nate Silver had for a meltdown at their blog host. An alternate host? A stripped-down version of the site that puts less of a load on the blog publishing engine? Anything at all? It doesn't look like it.
Now, obviously, a site about the presidential elections doesn't want to go into limp-home mode on election night, but it would sure beat going offline.
Very few sites have fallback plans to deal with overload--or as we might call it, the agony of victory. But given how quickly a site's traffic can spike these days, due to a few fortuitous links on a referral site like Digg or CNN, one would think that the clever site manager would plan for them.
All I'm proposing is that publishers set up alternate templates for their sites, stripped of complexity and widgets and maybe even advertising. Yes, an ad-free version of a content site might leave money on the table, but better that than losing readers for good. And if the content is great, readers new to the site are more likely to come back, where they'll generate those monetizable impressions once again.
By the way, I've covered this topic before: On September 14, 2001, in my Catch of the Day column for Red Herring, I proposed that sites handling public safety information that find their bandwidth overwhelmed by requests adopt peer-to-peer technologies to get the word out even when their servers are swamped. In retrospect, that was too technologically hard to do and would still be hard today. Likewise, having a site that could be switched into a low-bandwidth mode at the flip of a switch is not trivial. Although, if developers took some of my other advice and created mobile-friendly versions of their sites, those designs could be used in overload emergencies and might serve the same purpose.
Rafe Needleman writes about start-ups, new technologies, and Web 2.0 products, as editor of CNET's Webware. E-mail Rafe. 
When CodeWeavers found themselves swamped (lame duck giveaway - it was very cool), they posted a stripped version of the site with just the relevant links and text.
OTOH, blog sites (esp. the really small ones ) may not themselves be able to reach their host in time to make those changes... guess it all depends on how you're situated...