The only sense thing to participate in the IDO launched through DAO maker. I don't even think if participated in the IDO launched through another IDO platform is a good idea. It's caused by another IDO platform never gave good ROI to the investors.
People shall be more careful when investing in the IDO. IEO is much more profitable compared with IDO. So many projects were losing their value once they traded on the dex.
IDO is not a good platform to participate as an investor. I prefer to use IEO rather than IDO at this moment due to the how bad ROI being made by IDO platforms.
source: https://cryptorank.io/ido-platforms-roi
And ideally CEXes should weed out scammers from IEOs they host, while IDOs are for anyone with photoshop skills. Or these days you only need AI to build a convincing generic IDO.