Can anyone suggest me the best technical blog(s)/discussion thread/website?

I hang out in Ars Technica

http://arstechnica.com/civis/viewforum.php?f=10

Tek-Tips

Tek-Tips Forums

and DSL Reports

ISP discussion forums | DSLReports.com, ISP Information

(not that where I hang out is a good thing)

Ars Technica is the most generally informed, but somewhat cliquish, about a dozen posters reply with good answers. Tek-Tips allows you to zoom in on one vendor, and get experts (if any) on that vendor. DSL Reports is more mob rule, be very sure to double check advice from there.