I don't know if any extension supports this already, but
assigning custom user agents to individual web sites is listed
on the To-Do
list for the User
Agent Switcher extension.
There was a story on Ars Technica a while back (I don't have the link, sorry) where Michael Dell was doing a question and answer session, and someone asked him how much extra they would have to pay to get a PC without "Craplets". The figure he gave was $50 - $60.
What's more interesting is Dell's response to an offer from someone in the group who said that they would pay $60 to receive a PC without all of this bundled software. Dell's response was "sold!," implying that this would indeed be enough to cover the loss of revenues. Dell didn't respond to other offers, including one for $10.
Slashdot Mirror
I don't know if any extension supports this already, but assigning custom user agents to individual web sites is listed on the To-Do list for the User Agent Switcher extension.
Here is a link to that story. The relevant part:
What's more interesting is Dell's response to an offer from someone in the group who said that they would pay $60 to receive a PC without all of this bundled software. Dell's response was "sold!," implying that this would indeed be enough to cover the loss of revenues. Dell didn't respond to other offers, including one for $10.