apt-ing "unstable" files for a "stable" box

[David Kanter]

Is this bad: having a stable box (i.e., Slink) but using apt to update some 
files from the "unstable" tree?

Here's why: I have Slink and downloaded Netscape 4.61 from the unstable tree. 
Why? Getting a stable Netscape never seemed to work; not all the necessary 
files would download, so I opted to go for the unstable mirror, which has a 
nice meta package for Netscape.

Thanks,
Dave