@ccstone's disclaimer is generally applicable to the macros shared on this forum (and, of course, normally the priority of the authors).
However, when users have provided feedback that I think others might also enjoy (including myself 
), I sometimes update and redistribute the macros. This has certainly been the case with Log It.
Partially because I've learned so much from others in this forum, I try to share my macros when I think they might be generally useful. I suspect this is the motivation of most that share.
Finally, I will add that the forum administrators like @ccstone are very generous with their time and expertise!