never happend to me but there should be 1-2 warnings before you get temporary banned in my view!
While your posting structure might be similar and you have even more posts/day you do not sell your signature. It makes a big difference.
If you sell your signature consider yourself under constant watch. There have been lengthy discussions if selling the signature should be allowed or not, since it apparently (again "quoting" mods) increases spam. This is a very delicate topic. Allowing paid signatures enables e.g. students or kids to earn some coins which would otherwise be unable to buy or earn them. On the other hand if unchecked it results in spam. Those running the campaigns sometimes can not controll this and rely partly on the mods/staff. Which makes sense, for them the content of the post is less important than the "coverage". The more times the signature is shown the better, no matter what is written above.
[1]
https://bitcointalk.org/index.php?topic=609015.0[2]
https://bitcointalk.org/index.php?topic=609015.msg6817350#msg6817350 - I link mprep here, because hilariousandco was not staff at the time of the post
There are a lot of issues in regards to that then. What about a staff member with a signature (not pointing fingers, just making an example)? He is then naturally excluded from the watch list and can post however and how much he wants to. I think that there need to be other criteria now (?). Stunna even limited the number of posts to 400 per month. Is posting 400 in 30 days (which is 13.33 a day) really spamming? I mean the posts vary and you can't really judge someone based on 5-10 posts, it's the posting habit that also counts (time between posts?). I was also told that I could be as easily banned without a signature if I were to make a lot of posts per month which is ridiculous. I can remember a time when I was posting over 1k a month without any issues (even though I had much more time then and a signature). One has to watch his posting carefully these days and follow the guidelines as closely as one can.