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This work aims to establish whether astroturfing was used during the Covid-19 pandemic to manipulate Spanish public opinion through Twitter. This study analyzes tweets published in Spanish and geolocated in the Philippines, and its first objective is to determine the existence of an organized network that directs its messages mainly towards Spain. To determine the non-existence of a random network, a preliminary collection of 1,496,596 tweets was carried out. After determining its 14 main clusters, 280 users with a medium-low profile of participation and micro- and nano-influencer traits were randomly selected and followed for 103 days, for a total of 309,947 tweets. Network science, text mining, sentiment and emotion, and bot probability analyses were performed using Gephi and R. Their network structure suggests an ultra-small-world phenomenon, which would determine the existence of a possible organized network that tries not to be easily identifiable. The data analyzed confirm a digital communication scenario in which astroturfing is used as a strategy aimed at manipulating public opinion through non-influencers (cybertroops). These users create and disseminate content with proximity and closeness to different groups of public opinion, mixing topics of general interest with disinformation or polarized content. [ABSTRACT FROM AUTHOR]

The Covid-19 pandemic has temporarily emptied museums and drawn attention to an aspect of these cultural institutions that is often seen as secondary and subordinate to their physical presence: the digital dimension. Having been forced to close their doors, museums have sought to boost their online activity through a range of different initiatives. The most notable actions undertaken in terms of frequency are related to social networks. This situation obliges us to ask the question: have museums succeeded in achieving a meaningful online presence in their communities via social media? In terms of marketing and digital communication, content is understood as meaningful when it provides value to the audience. This value arises from the alignment of the objectives of the institution with those of the target audience; this makes it essential to understand the profile of users who comprise the communities of different digital channels. Drawing on a comparative analysis of the profiles of museum visitors and those of social media users, this paper addresses the challenges of connecting on social media with the generation known as Generation Z (a population currently between 14 and 24 years of age). To do so, it attempts to define this generation and determine how it uses social media, taking advantage of the work already carried out by Spanish museums on their social media profiles during lockdown to establish how museum institutions can make themselves more relevant to this demographic segment in Spain and beyond. [ABSTRACT FROM AUTHOR]