The ones that have an information button are under each section because they were posted by pimd themselves. That means that they're important and/or are announcements, and so they are in every section so everyone has the chance to read them. When you scroll past them, that's when the topics are different from the other sections. Is that what you were talking about?
If you go from forum page to the announcement page and then try to go back, it won't. Secondly yes I do call for a better organisation of data
That's 100% correct. There are global announcements that will appear in every section at the top. This is to ensure everyone is able to see these. We'll continue to monitor your feedback and can make changes, however we're trying this out for the time being.