  Fake news are affecting a large proportion of the population even becoming a
danger to the society. Mostly, this disinformation flow take place through
Internet. Being aware of that problem, in this work we propose a synthetic
indicator that measures the user reputation in Twitter in order to analyze the
credibility of the content in this social network. In order to show the
indicator utility, we have analyzed data from some political topics in Spain
from 2019 to 2020 and we have checked that bots plays a decisive role into the
spread of news and, as might be expected, the link among popularity and
reputation reports about the event credibility.
