I find that FeedDemon is probably the most useful tool for web browsing. It lets me stay on top of hundreds of websites and blogs very efficiently
It uses the RSS feeds from the sites and downloads summaries of the articles. You can browse these off line and, most usefully, the system can quickly let you see which sites have new information
I originally paid about 30 GBP but its now free. I have attached my current OPML file which can be uploaded into most RSS readers – be warned it does have a lot of junk in it !