This research was intended to understand the most common annoyances and fears children face on the internet. To answer that, we analyzed their responses to the question What would bother or upset children your age on the internet?, which is part of the survey TIC Kids Online Brazil, conducted by Cetic.Br. The data were analyzed from a sample of 1,580 Brazilian children with ages between 9 and 16 years, in 2012. The answers were analyzed using ATLAS.ti software. Among the main results, it was observed that the biggest annoyance respondents found was coded as people who conduct acts that are considered inappropriate, such as name calling, verbal aggression, invasion of privacy, and so on. This kind of behavior indicates a possible lack of ethics to the virtual environment. The content that was cited the most was pornography, being the most frequent among kids - possibly an indication that this type of content is affordable and easily available, even if you have no interest in it. Among the younger children, there is a concentration of responses around scary content - which corroborates previous research. The scary thing that was most often cited was being contacted by strangers. This work brings out the importance of parental and institutional mediation in children s use of the internet, through a collective work that can bring awareness and help them cope with the risks and situations pointed out by them.