I've transcribed a lot of video game music in my lifetime, and am interested in making these sheet music transcriptions freely available for download on a website. I see that a lot of other websites have done this, such as Ichigo's Sheet Music or NinSheet Music.
I noticed that the above site, Ichigo's Sheet Music, states that the transcriptions and giving them away falls under Fair Use. Is that correct?
1) Are there any legal consequences to be concerned about with this practice if the transcriptions are given away for free?
2) Are there any legal consequences if I put ads on the website where the transcriptions are to be hosted?
I realize that a similar question has already been asked at the below link, but I did not find the answer that pertains to this specific case. Transcribing music and the legality of using musical transcription