I do come home after work and surf 3-4 sites, including this one. It's about a hr. --including checking my emails..which isn't much, some of it is related to work (notices from professional associations) and check my finances.

But not much more time. Other times, I am on the bike...another addiction.

If the Internet is an addiction, then make sure you have a 2nd addiction/passion that takes you completely away from the computer and somewhere else.
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http://cyclewriteblog.wordpress.com/ (How cycling leads to other types of adventures, thoughts)
http://velourbansism.wordpress.com