The navigation buttons or links that are displayed at the bottom of each comment section in BlogSpot blogs enable visitors to switch between new and old posts or move from one post page to another ordered by date and time. These buttons become less of use when number of comments increase too much. Normally readers do not even observe the navigation deep down and this results in loss of precious pageviews. I have always emphasized that value pageviews more than unique visitors because it is indeed pageviews that turns into revenue generating page impressions both for AdSense or any other Ad Network. You might have seen the More, Next and Previous button showing inside the top black sticky bar on MBT homepage and post pages. It is really not possible to shift a Post data item to any other widget section in blogger. Doing such results in "Data variable not found in dictionary" error or similar.