I wrote into two blogs that I rarely think about:
Gathering up all of my blog entries from everywhere and putting them under one site has always been in the back of my mind. I have taken steps to do this, especially grabbing entries from WordPress sites en masse, but I have yet to write and deploy the scripts that fixes the metadata and image links to really make it happen.
My "old" WordPress blog is pretty deep in terms of content. It was active from 2005 through 2009ish. Combine that with my Daily News-hosted tech blog, active from 2006 through 2011 (with a smattering since then) and my other Daily News-hosted personal blog, active from 2006 to maybe 2009 with a trickle since then, you have a lot of blog posts.
If and when I do get the ability to take the output from WordPress data dumps and turn it into text and image files that can work in flat-file blogging systems, then I'll have a huge archive of everything, however dubious it may be.