Three examples which I've found today (looks like I will have to flush out the trash from Bitmixer earlier this week):
https://bitcointalk.org/index.php?action=profile;u=149006;sa=showPosts;start=40 duuuuude
https://bitcointalk.org/index.php?action=profile;u=84987;sa=showPosts;start=40 Gufeng
https://bitcointalk.org/index.php?action=profile;u=217246;sa=showPosts;start=40 ajeef

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It is absolutely disgusting that nothing is seriously being done against this.