Do we really need to use sidebars that scroll with the user?

i just read, ...well started to read, the article about wikileaks publishing info that the eu tries to curb free software. (http://blog.javier-carrete.com/2010/10/wikileaks-publishes-documents-on-plan.html) is it really necessary to fill a blog with a sidebar that continues to scroll with the user? for me this is so annoying that i leave the site without reading it at all. disregarding that that scrolling doesn´t work very smooth (at least in ff on linux) the site loads huge amounts of js from different site that doesn´t load completely? (for me it always stops at something from www.goodplanet.org) what do you guys think?