Websites today for me and most businesses is a key part of our marketing activities, in that much like a high street shop window to any passers-by, if you get their attention or interest i.e. in website context via relevant search terms within Google, or other major search engines then great, you've caught their attention and hopefully built on their existing need more than they originally thought and then they're likely to come in a browse further.
If however they walk past that same shop window the following week/month and it's the same old stuff which they've already seen before, would you go in again? I'm not so sure... there is nothing worse than having a website with "breaking news" that actually broke in 2005!!