I find ugly spam from user BetBTC
They promote his casino over forum, posting the same mega-post in all. I report one of his post, and mods delete it, but there are a still lot of his posts. post history https://bitcointalk.org/index.php?action=profile;u=253453;sa=showPosts
If we look further into its history, he does it regularly. Posting and repeating the same post in few topics.

For example, he posts his casino offer to all sports discussion boards: