One of my client quit the contract with me, when he saw a google dance for two days. His site was in top 10 after my one weeks link building, but after two week it pull down to 30th position, which make the client to be hard. So now I need to know any method that can show me the real ranking of the site.
every site will go do the google dance, especially if a lot of backlinks are build in a short period of time. You should make this known to your clients before, so they understand that. In most cases they return with a better position then they had before (that's my experience). Leslie