  The GRB Host Studies (GHostS) is a public archive collecting observed
quantities of GRB host galaxies. At this time (January 2006) it contains
information on 32 GRB hosts, i.e. about half of the total number of GRBs with
known redshift. Here we present some preliminary statistical analysis of the
sample, e.g. the total stellar mass, metallicity and star formation rate for
the hosts. We found that these are generally low-mass objects, with 79% having
M_*<10^10 M_sun. The total stellar mass and the metallicity for a subsample of
7 hosts at 0.4<z<1 are consistent with the mass-metallicity relation recently
found for normal star-forming galaxies in the same redshift interval. At least
56% of the total sample are bursty galaxies: their growth time-scale (the time
required to form the observed stellar mass assuming that the observed SFR is
constant over the entire life of the galaxy) is shorter than 400 Myr.
