<<This is why your inclusion of your paleofitness site address seems
fine to
me,
since it is a bit of data (an address) rather than a thought, and is
on-topic
(thus www.serbia.com would perhaps not be appropriate).>>

LOL - here's 2 more cents from me:

A web address is also considered a signature file.  If a web address
is
worthy of sharing, it is usually shared once - or occasionally, as
appropriate to the discussion.

Siobhan