The idea behind Skycoin looks nice at a first glance, above all for decentralization advocates. Their proposal seems to be to replace internet service providers by rewarding owners of Wi-Fi routers to form mesh-nets (like for example, the Freifunk initiative in Germany) and "forwarding traffic".
But I recently read an opinion from a respected and highly skilled member of this forum that there are serious doubts about the feasibility of this project. There are very hard challenges for such a "mesh-net" project if it really aims to replace ISPs, and there seem to be much technobabble and few in-depth explanations how the system would really work. But if they don't replace ISPs and the whole thing works over the "standard internet", then they're basically reinventing Sia (a project that already exists and works).
Maybe I'm wrong but I would not recommend to invest here. It is very likely simply "to good to be true".
PS:
This doesn't really look trustworthy. They keep weaseling around the issue. And the "Obelisk" consensus algorithm seems to be very similar to Ripple ...