Hello, Paride. I noticed that you added information to the lead section of the article about Signal, but you did not provide a reliable source. Unfortunately, personal websites, open wikis, Internet forum postings, social media postings, and mailing lists are not acceptable as sources. Your best bet is to use a source from a notable news organization that has discussed the licensing of the Signal servers. We must also consider relative emphasis: With so little, if any, reliable secondary coverage about the licensing of the Signal servers, it is doubtful whether that particular bit of information is significant enough for the lead. --Dodi 8238 (talk) 10:33, 6 July 2016 (UTC)[reply]

Agreed, it's probably not important enough for the lead. I'll add it somewhere else if I'll find a reliable source. Paride (talk) 10:39, 6 July 2016 (UTC)[reply]