I joined signature campaign but which one is true? In OP it says you need to make total 15 posts, in ColorlessK's last post it says you need to make 15 posts per week, 30 total for 2 weeks.
Rules, Terms Conditions:
2: During this period you must make a minimum of 15 Posts in order to be considered eligible.
3: Only Posts that are useful and constructive will be eligible towards the 15 Post goal. Posts that are off-topic, or simply made for the intention of raising post count will be diqualified.
Signature posts will be counted at the end of the campaign, at that time you need to have an average of 15 posts/week. It doesn't matter if you have 10 in the first week and 20 in the second or the other way around, you just need to have 30 posts to receive stakes for both weeks