Articles for Hive account@originalworks contest is what I call "Sponsored content" and you (at least in my opinion) cannot present projects in a "bad light", otherwise chances of winning decent prizes are small. (most of the projects are not worth writing or mentioning about, however with monetary motivation people are writing dozens of articles mostly saying that projects are solid and good). In regards to Effect.AI the idea is pretty decent, however there is no proof of concept, so I consider it a very risky and long-term investment. Hype is growing towards this platform (800k visits last month, 2 times more than in previous month), so may be some profit can be made. I wouldn't invest in this, because in my opinion there are better options for short-term investments. From profit perspective I would pick something like Dreamteam. They have 2nd stage of ICO and will be out on exchange in June. They have beta version of platform and no real competitors in gaming sector.

I do not know much about Switcheo.network. They only started to have decent user activity in February (174k visits). Domain registration info looks dodgy. But then again, for now it looks like a legitimate decentralized exchange (if they do not collect your private keys, which you use to connect your wallet to exchange) at least unitl October 2018 (that's when domain registration expires).

Thanks for participation and support!
Alex