While many view the affect of music piracy as negative on a "recording artist" based on sales numbers alone, it is important to point out several criteria that may sway the pendulum of these beliefs. For a new artist, or one who is fairly new to specific markets, any form of P2P networking is a way to get the artist's name out there. For more famous artists, it could be a way to get yourself out there even more and establish some sort of brand familiarity with consumers in the marketplace.
I believe there are several negative aspects that affect not only the "recording artist", but also all parties involved in the supply chain of the music industry. It has been said that "recording artists" no longer "record" like they once did in the time of the Beatles. The Beatles were said to have given up concerts because they couldn't hear themselves over screaming fans and solely recorded in the studio (i.e. the "recording artist"). Now, with the internet boom, artists are able to work from home and have instruments played for them on a computer to construct their beats. On specific albums, an artist who has another featured artist on a song may never even meet to do the song together (or even the video for that matter). The main artist will send the first verse and chorus to the featured artist via email, who will then make their verse and send it back for final completion of the track. This has eliminated costs to the artists to rent out a studio, but also eliminated the idea of the "recording artist" all together.
Let's hope that this trend won't lead to a decline in music because artists feel as though they "just can't make it any more".
-Cfree