If you use a META Refresh tag on your website to reload the content after a certain amount of time, make sure it is absolutely necessary. Getting the idea from a theme I was checking out for WordPress, I decided to add a 30 minute refresh to my blog, simply to make sure users idling on the site would have updated content, if available.
My Dad, thankfully, tipped me off to the fact that the refresh was able to trigger his dial-up connection to start dialing. Not exactly desired behavior at all!
So do your dial-up users a favor and don’t use META Refresh. I know I wouldn’t want this site to be responsible for someone’s Internet inadvertantly dialing in and remaining active for long periods of time unattended, if there were phone or usage charges involved!