Wait a sec -- the back page of my February 2003 CO "Elite Update" newsletter states in LARGE type
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">All jets. More cities. Today's Continental Express.</font>
Yet the Yahoo article cited above says
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Continental codeshare partner CommutAir will operate the flights with a modern fleet of fast, efficient 19-seat turboprop aircraft with all-leather seats.</font>
I gues codeshare flights only count as your own flights when it's convenient. It looks to me like yet another enhancement.