I know that many good ICO's around and some were very promising. HOwever, there are other ICO projects to which now looks like an April Fools who's team always talk to much but in the end of the ICO period all they have to do is to be silent, list the coin of the project and then dump the project. This is why we really monitoring from these guys to keep their promises before, during and after the ICO period.
Oh well, that's what majority of ICO is, so don't be surprised.
And now the IEO is born, it might be difficult for those projects that are purely design for pump-and-dump because investors grew tired and since we have a new hype with IEO and much promising then don't be surprised if ICO will be obsolete in the coming years.
Dont be too over confident mate that the fact it is an IEO project means there cant be dump, to me, IEO even seems to me like the easiest way to really experience dumping because most IEO projects when launched on the exchange increases in price to almost 5x.
I learnt some even give upto 100% profit, this will make a lot of investor quickly think of taking profit and they will no longer wait for long term or hold it. If I too participate in an IEO project and it gives me 100% increase, I will dump the coin too and move on to other project rather than waiting for a very long time to see my profit compound.