Mateusz,
I am spidering the gopherspace since a few days, collecting things for a
new project I will publish soon.
If you see 178.170.108.36 hammering your gopher server, that would be me.
Do not hesitate complaining if you notice I'm too hard on you, I will
try to spare your server then (I already see that sdf.org have
blacklisted me).
FWIW, I throttled several minutes between requests to the same IP (or would
find another to visit in the meantime) and I always honour robots.txt if it
can be fetched (and cache it).
However, since V-2 only fetches menus and has a well-known reverse DNS, I
imagine sites are a little friendlier to me.