Linking Between Sites on the Same IP Address

In a thread named Links from the same IP? at JimWorld a member asked the following question.

We are hearing rumors that Google will no longer count links-in from sites with the same IP address, i.e. links between virtual sites on the same server.

This conversation goes deep into virtual servers that share the same IP address. It also gets into ethics and concepts such as hilltop.

Nice thread, so check it out.