I try to be aware of them, but I don't follow them too much. Some trends can easily and fairly inexpensively be incorporated into my jewelry, but many are just not a good fit. Plus, I'm not hip enough myself to always keep up with what's "in". ;)
I do change my banner & avatar seasonally - right now, it's nautical. In the Fall, it will be more of a woodland theme, probably.
I think there is definitely a middle ground between traditional and current trends.
And I vote bare feet over socks and sandals. ;)