For this you will have to post in this topic the last 6 characters of your contest ticket # entry that you will get after you join the contest.
Saw this in a thread the other day, it's just another form of spam, except users are being used to do it. I don't find this acceptable, it was literally 4 pages of bc6759 with 3 or 4 real posts. I warned the OP for this and advised them to remove that portion, they didn't and just put Closed in the topic, so I just locked it.
At what point is this kind of spam acceptable though? TizzyTazzy did kind of the same thing, but it was a "slogan contest" with ultimately no winner. Other businesses are starting to do it too, and getting more bold. This results in constant spam and thread bumping for no reason. I don't think OPs should encourage spamming their threads, if they want to verify users accounts there are better ways to do it (unique codes in one of the unused fields in the profile for example), if they truly want to run a contest it would be a better fit in gambling, with no spam stipulations.
Here's another example from the current Coinabul thread, two of them actually.
Bolding is mine.
Just wanted to get other's opinions on this, it's something that's been bothering me a little bit for a while and seems to be getting more common.