If you do something public there are always going to be negative reactions, always. Because it´s socially much much easier to do it online due to anonymity(even when you have a reputation online, you are pretty much anonymous on you normal live) that grants you no social consequences to your rants (such negativity in real live could make your life quite solitary in no time), don´t expect a majority of positive reviews online. Just in case there is a global fever around you and people is drown to support you no matter what, just then you´ll have lot´s of supporters. But then the critics will be more fierce and personal also. Just read them and see if there is something worth to be used to improve your idea now or in the future. Ignore the rest as social noise.