More than this (the code looks for a div tag if it’s not there thinks it starting a new archive overwitting the page with it’s template. If the page is too big it might not detect the tag).

A more stable way to do this might be to use my Twitter Archiving Google Spreadsheet then embed the spreadsheet in the page. I’ve also got something that converts a spreadsheet of status update urls into a formatted page. If you are also feeling brave I could help you set something up to automatically monitor the sentiment of the tweets