aakk9999 - 11:02 pm on Jul 21, 2013 (gmt 0)
I think that a signal may also be a critical mass of searches where the user is searching for a product in conjunction with a website name, such as:
wigets websiteName (with or without .tld)
and *especially* if a widget is a product that is offered/can be bought on many sites.
This could indicate to Google that you are interested not just in widgets but in fact that for some reason you may want to buy it from this particular website.