Of the time you spend here at this Forum? It's been noted that some people spend an awful lot of time here.
Of course Logic would dictate that some people have a lot more available time on their hands than others. People that might work from home. Or are retired. Or have one of "those" jobs that allow them plenty of time while "at work" by the very nature of the job.
How many people post here while at work? Would you be in hot water with the boss for being on the Internet on his or her dime? [regardless of the site]
I have seen people at many Forums claim they do not watch TV at all. I guess it's certainly possible but I think it more likely that they do not watch very much TV.