3 way linking is usually bad because most sites that need to use it are not worth linking at and do not have links which carry much link weight. Though doing a bit of it might help, as long as you have many other clean link sources and the 3 way stuff is a small percentage of your overall links.
Google has little control over most stuff like that. You can tell them but you probably will not see much of a response.
rao vat nha dat