[oconnor663]

http://www.sarahmei.com/blog/2013/11/11/why-you-should-never...

[elmigranto]

I don't like this one too much, because Mongo is wrong choice here domain wise, but this one was really convincing for me:

http://cryto.net/~joepie91/blog/2015/07/19/why-you-should-ne...

[gjolund]

diaspora was such an interesting project, I dream about resurrecting it often.