Generally speaking, Meta refresh is a method used by some websites to instruct a web browser to automatically refresh/redirect the current web page after a given time interval.
You can see this type of refresh/redirect especially in media sites. This is some times annoying or can be used for malicious purposes by redirecting you to a malicious site.
If you don’t like this feature, you can disable this in your browser. Here is how to disable this in Internet Explore/Chrome, Firefox and Opera.
Internet Explorer: Go to Tools - Internet options - Security tab - Custom Level button - Miscellaneous category - set "Allow Meta refresh" to Disable.
Firefox: Go to Tools - Options - Advanced - General - Accessibility and tick the option next to ‘Warn me when web sites try to redirect or reload the page’. Alternatively you can use extension RefreshBlocker.
Opera: Go to Preferences - Advanced - Network and uncheck "Enable automatic redirection".