Will I do not think there is a need to start a thread to promote another thread unless your thread will be basing on the thread being tagged. You can just bump the thread in which you think wil be very interesting.  If it is really that interesting many members will going to take a comment in that thread. Well in my opinion the thread was not really useful. No one knows the future of cyptocurrency except if you are a time traveler or with the power in prediction.