The best approach to maintaining and improving your website?
Like most pieces of machinery, a web application requires ongoing maintenance and performance tuning. We often compare it to buying and servicing a car. If you've just bought the car of your dreams, you'll want to service it periodically - making it safer, more efficient, less prone to breakage, and extending its life.
Thinking about a website, what's appropriate may range from periodic security updates with minor enhancements over time; through to proactive weekly activity and improvements.