Recently I had engaged some company by the name B* to do some Local citation. They pick for me some of the popular business directory or so? I guess, such as yel* and some others, but I realise my rank sank shortly after some of the links was done(not sure if it was indexed) and the rank remain N/A for quite a while on some keywords. I not sure if Local citation is a neutral party or its could cause ranking to sink. I am more paying attention to my ranking ever since penguin live roll out, checking all possibility for ranking changes. I also did other SEO work like PBN, and diversed SEO package. Trying to narrow down the culprit and do a disavow on bad links. Anyone got bad experiences with local citation ?