It helps to use an automated service that feeds your site such information such as the weather, date/time, news and/or stock tickers. Even rotating word-of-the-day, jokes or famous quotes will make your site seem fresh and updated daily.
You can place a script directly using a server-side include (SSI) or footer so it appears on each page. You can also use Real Simple Syndication (RSS) as well.
Here are a list of sample sources for automated content updates.
BUSINESS QUOTES
http://en.thinkexist.com/DailyQuotation/customize.asp
www.quotations.com/useourquotes.php
www.sitescripts.com/Remotely_Hosted_Website_Content/Quote_of_the_day_Script.html
DATE/TIME
http://javascript.internet.com/time-date
www.cgiscript.net/site_javascripts_date_time.htm
http://www.scriptsearch.internet.com/JavaScript/Scripts/Calendarsk
www.webreference.com/js/scripts/basic_date
STOCK TICKERS
www.phpmaniacs.com/scripts/view/3256.php
www.scripts.com/javascript-scripts/text-scrolling-scripts/stock-market-javascript-ticker
WEATHER
www.weather.com/services/oap.html?from=servicesindex
www.wunderground.com/about/faq/weather-sticker.asp