Am I reading that right? How can I test landing pages that way if the display URL has a limit of characters?
no no no not exactly You can have this: Display URL:yourawesomesite.com Site URL: yourawesomesite.com/landingpage1.php?smth=smth
Your display URL needs to be the URL where the searcher lands after clicking on your ad. If you have a redirect script or link of say http://yourlink.com/mytrackinginfo/z12345, but after you visit that page it ends up at http://yoursite.com you could use yoursite.com as the display url and the other as the destination url
Display URL needs to be only the domain name & extn... it need not be the entire path... If your domain name & extn extends the limit drop a note to adwords support.