anybody experiencing this? I have a site that was ranked quite well (5th) in its main keyword and 7th in its secondary keyword but then it went down to rank 500th or so for a month. I thought it was sandbox or something because it went up again last week back to its original positions. However now it's back downhill to rank 400th... this is not my only experience with SEO, i have another 2 sites which experiencing the very similar google dance. Is it because I use link push and scrapebox blast? but I don't use SB to my main site, i use it to my dummy site which I link to my money site (but seems my money site gets affected as well). What to do?