I am a newbie on this forum and I am planning to launch an ICO soon...the project is in the pipeline... So collecting some useful info on how to make my announcement thread engaging...I have read many threads on this forum and found that few announcements are very hot topic, whereas there are many other struggling to be on top....
You will need at least one team member with experience in ICO marketing. Since you are asking this question, you don't have one, which means also that your project is not mature.
Your first priority is to find someone for that area. You don't have to hire someone full time, but the best don't work for peanuts.
Eventually, but much later, you will hire a good bounty manager. He or She will be able to guide you through the process of creating a campaign on Bitcointalk, Facebook, Twitter, etc...
To make sure you follow an adequate marketing strategy, you may want to contact some ICO advisors. Look for other successful campaigns and see if you can contact the same advisors. You would be looking for ICO advisors, Marketing advisors and / or "Growth Hackers".
Normally, if your project is reasonably good, all these people would accept a payment in tokens. If they don't accept, reconsider your project.