You have an historic of your own post in the profil
http://www.scirra.com/users/miu3
Also you can keep a bookmark of your topic.
As far as bump goes, I would just Reply to my own topic with the new update, and edit the first post by adding the new capx with a little description and changing the title like "Miu3's R&D [UPDATE 2011-05-12]"
And yeah Kyatric is a nice french guy who maintain a neat FAQ, but compiling some of your stuff might help a bit.
who talked about screenshot?