At this point in time, i forget that I've visited HN, so I check HN again. But then maybe somebody posted something interesting that I missed, so I refresh HN and look at how it changed. I do this a few more times.
Then I ponder, trying to remember what other forums I regularly visit. Ahhh, the Cavern of COBOL. So I check that. And then I think of a few more places. To refresh my programming, I see what's on the Drudge Report. By this time, there might have been a new post on HN, so I go back to HN.
Then I go to work, and check HN and Proggit. Then I check HN throughout the day. Usually while compiling. The build process has gotten quicker lately, so maybe I should get a few more antivirus programs. Then I get home and do anything but get on the computer. God, what was I thinking? Then I get on the computer anyway and check HN and Proggit, and realize that proggit is too low-quality and go back to HN, but then realize that HN is getting really repetitive and it's full of people who are just full of themselves, which I don't like because it reminds me of myself. Then I try to rip myself from the screen and if successful go have a life or something.
HN and Gmail are the only sites I use regularly. I check the frontpage of Reddit about once every three days, usually when I'm watching HN restart after I've changed something.
My web routine == far too much lost time :)
Sometimes I just have to turn off the internet while I work. Unfortunately, I often need the internet to complete my work. Enter procrastination...
I also subscribe to a lot of mailing lists that I have a filter set up to automatically label and skip inbox on, that generates a couple thousand extra emails a day that I skim through and read 1% of.