I'm seeing a number of mod flags around links to abandonware sites like:
Should these "grey market" sites be allowed?
My opinion -- unless the site is clearly illegal and hosting "warez", it's OK to link to these sorts of grey area "abandonware" sites.
The legality of following the link and downloading abandonware is a decision for the person behind the mouse click, and the person running those sites, not us.
My opinion is to not link to those sites where not needed, but not remove if they clearly add to the question/answer.
I prefer "might be availble on abandonware sites" instead of "can be downloaded from http://www.abandonia.com"
Naturally, when the site in question is clearly hosting warez etc. it is clearly disallowed, and should be swiftly removed.
I really don't want that the new game site is blocked my corporate firewall because it links to porn/warez/hack site.
For me is ok link abandonware sites but they have to be rated good and safe by services like for example http://www.mywot.com/