Maybe its something to do with getting old, but I keep getting distracted by things on the internet and finding hours have gone by and no work gets done. But I do positively need access to certain sites for my work, and sometimes I have free time and am happy to allow myself to look at stuff for hours. I have considered editing/re-editing the "hosts" file to temporarily block certain time-killing sites (news/etc) but it seems very clumsy - and you can only block entire domains and not specific things within those domains. So for example I'd like to block "www.google.com/reader" but not block "www.google.com".
Any suggestions? Is there some software that would help me out?