That's not what I want to know. What I want to know is how agressive is Google being about going after cross-linking, because surely some of the types I listed are more legitimate than others. For instance, let's say I have a site about widgets and a site about parasailing. I have a page on my widgets site about widgets for parasailers, and on that page I put a link to my parasailing site because the content is related and visitors may be interested. Both sites are hosted on the same server. I've done this linking sparingly, but I think it is legitimate.
So when people are talking about penalties for cross-linked sites, I want to know, specifically what kind of cross-linking are they talking about.
How has Google responded to these different scenarios, in your experience?
Also, I'm curious about deep-content pages from Site A linking to deep-content pages from Site B.