It's not alsways clear in the forge if an old module is still compatible with
new CMS versions. To create some clearity in this I suggest to make a little
poll for each cms version so users of the module can click to indicate
compatibility. It can at least give a decent indication about how much trouble
you might expect while using the module, based on experience of other users.
It could look something like this, where yes and no are clickable for all loged
in users:

This module works in:
_____________________
CMSMS 1.8 
yes 90% | no 10%
_____________________
CMSMS 1.9
yes 95% | no 5%
_____________________
CMSMS 1.10
yes 35% | no 65%