...
I don't think it's a question of supporting or not supporting, as
abandonware doesn't say anything of the software's status as freeware or
not.
Just as some other ware-types defined on the Pricelessware pages, there has
to be some additional information on the specific software to be able to
judge it as freeware.
One example of abandonware that I personally highly recommend is "Visual
Thought", a previously commercial diagram tool, that has been explicitly
abandoned by the company.
http://www.bombshellstudios.com/samples/co/vt.html
The company has in this case explicitly set it free when they ceased further
development of it, and provides a "public licence key" on their website to
anyone who wants to use it. With that key it will expire in the year 2014...
Software that has been abandoned should be considered on a case-by-case
basis. If it just has been abandoned without any information on further
status, the licences that were in effect before should still apply, aka if
was it freeware before it should still be considered freeware. If it was
something else before it's not freeware.
IMHO
// Bjorn A