so i have been keeping track of one of my competition and they are rising in the SERPs which is ok but i dont know how they are doing it. I have checked there links and they actually lost links in the past month i have about 800 links and they have 100. I have a lot of similar backlinks. I noticed that they are hiding txt in their webpage by blending txt in with background but could that be enough to make them rise in the SERPs. Could they be doing something that i wouldnt be able to tell by just looking?