I've never thought about potential buyers looking at what I am interested in and like. I don't think most would take time to do this. I think they search and buy and leave...
However, I think if they did look, the results would be telling the potential buyer what you are like as an artist...good, evil, sad, happy etc...for what type of art you like tells a lot about you as a person I would think. So I think for most it would be a positive instead of a negative. I also think what goes around comes around... I personally love promoting others works and think it all relates to sales for us all...