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?
Specifically:
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