philosophical question about gmail

[Kevin D. Clark]

Some of the members of this list have not signed Gmail's user
agreement (let's call this Group A).  Others have (let's these people
Group B).

It takes some amount of effort to belong to this group.  Why should
the efforts of Group A be available to Gmail (in the form of raw data,
marketing data, and potential advertising revenues) simply because
Group B decided to sign Gmail's user agreement?

Just wondering.  I haven't made up my mind yet about Gmail.

--kevin
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