Hostwick.com/Articles  

1. ClueLess !?
2. About OverSelling
3. DIY ElCheapoFailoverSystem
4. Failed transition PowWebEnduranceSaga
5. ClusteringLinks for redundancy and scalability
6. Why I don't like/recommend CpanelHosts
7. The list of GenerousHosts
8. LoadAverage
9. Some threads in WebHostingTalk

You can find some of what I wrote in SitePointForum, WebHostingTalk, and so on.

Also, there are some notes/memo in http://check-these.info/