LiveJournal isn't a failure! It has millions of users! It is responsible for substantial open source projects! It pioneered social media! It made a few people rich!
Memcached is damn useful, and Perlbal saved me from server meltdown and banning many a time when it was still my favorite language to write the hackish, duct-taped monstrosities I called "web applications."
LiveJournal hasn't been the same since bradfitz stopped working on it, but it was a milestone as far as interactivity on the Internet is concerned.
I don't drive a Model T, but a lot of people did.
Show some respect.