This is true - I do a lot of perusing from work, and I usually just flip through a few and leave maybe 1 comment on one picture or two. If there is new stuff (and there usually is) that's the first to go.
I don't think its a bad thing though, as you can go back and look at all the purty pictures that has bombarded the site and then comment/rank then

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Arguing on the internet is like competing in the special Olympics - You may win, but you are still retarded