Yeah, great idea....for YOU. The rest of the people using instagram, Facebook, & Twitter don't like having everything spammed with advertising for scammy ICO crap that no one is interested in other than devs and people who engage in those campaigns. I say it's a horrible idea.
People all over the globe are now using the social media (Facebook, Twitter, Instagram, Pinterest, etc. etc.) to promote themselves and whatever venture they are into. Yes, they can be spammy in nature because they are really promoting with commercial value but this is something already unavoidable in our modern internet and social media generation. This is the reality we are into. Of course, spams have to be controlled as much as possible without sacrificing our rights of expression and speech.