Barbie did just this few years back (2008?) couldn't find auto software so wind up doing a manual copy of over 2,000 posts that I subsequently deleted . . . How good is your understanding of HTML?
After clicking on your "Show Posts" (or anybody else's) you "View Page Source", "select all / copy / paste" into a searchable editor (I use Ultra-Edit32), strip out all Susan's Place header information based on search keywords then paste what's remaining, just your posts and links, into a local HTML processor. Skip to "Show Posts (pg 2) and repeat . . .