I agreed about google is best friend where we can learn many things but on the other hand google might be risky. I know a bit about Seo ranking, any fake site can be show in the first place on google when you will search your desire things, its possible by only seo, so be careful about searching any information, google isnt always right way.
The amount of data being generated every single minute is enormous, so it is impossible to have human reviewers to check every single website, and as such Google uses bots to accomplish this task, but bots are not perfect, and scammers are masters at exploiting any weakness that their bots have and put their websites at the very top of the results by the use of black that marketing techniques, and taking this into consideration we need to always be very careful with the websites that we visit, especially the ones in which we deposit some of our money.