Besides having a bounty campaign and a signature campaign, what are other forms of promotion for an ICO that is essential to its success?
Of course a good underlying product is important and a white paper that explains it but as far as marketing vehicles is concerned - are there any other avenues worth exploring?
I know this is arbitrary to the quesstion at hand but most successful ICOs have moderately functional protocols or at least commitment to the protocol before hand (LINK for instance). The constant rise of vaporware ICOs is become a deterring view.
Now as for marketing or campaigning the best way to gain a successful ICO is to have avenues of instant communication between the developers and investors. If you have a good project that you are passionate of, share it with your investors. Sincerity really pays off more than marketing at some points. MBRS for instance.. MBRS did not even fill their minimum cap of 100k for their ICO but their dev said "we can give you your money back if youd like but if you believe in us we will do with what we can with your money and let you know everything along the way" - now they are well over 3m market cap.
Transparency and sincerity will win over flashy marketing in the long term.