ThisIsOli - 3:04 pm on Jan 23, 2012 (gmt 0)
NoFollow stops everything. However, Google may still use the metric for link spread analysis, they have not confirmed either way.
Trust is indeed non existant, it is a term covering a wide range of trust factors, but Google has confirmed that different values other than page rank are passed via links. Whether they do this for individual factors or for a calculated trust factor based on individual factors is unknown. But everything to duplicate content to the position of the link on a page can affect the value of a link.