In the last one, Skype logs are given: https://imgur.com/a/VuxQI it shows the address "15YWc15M7Ht49rMohYrwNh3RggtgAjcMEp" which is wallet 02d8d4de4563bb08 on walletexplorer. This user repeatedly made deposits to Poloniex, specifically to deposit address "1FtzkMkeggTPq7xVn3vTdbU7cDp9NZJoNc".
1PsfsGbooKzMohG9SshFbNUaHRTZUQeu4S had 1 TX, sent to Poloniex deposit address "1FtzkMkeggTPq7xVn3vTdbU7cDp9NZJoNc". Other addresses from user "favours" make deposits to the same Poloniex deposit address.
Light's address "15YWc15M7Ht49rMohYrwNh3RggtgAjcMEp" and Alia's address "1Sexyb1p8byGxunfTfHvL9SXsWqHyEPVk" (as seen here), both made payments in to the same cryptopay.me account.