Because that thread is a discussion in general and anyone can easily give their opinion, Just like thread on "How to get Bitcoin" and some price speculation for a coin will surely give your thread always up. But I don't know why you want your thread always up. It is usual that thread will be flooded because of new idea that posted daily.



There is no hack for this and FYI, that old thread that updates again are already starting to delete by the mods since it is an easy target for spam user. Don't aim for a thread that many users discuss it but create something creative/useful thread that will help the community just like what shorena contribute on this forum. In that way, your thread might be on sticky and always be on the first page of the section.