Excerpts from three answers to a question on LinkedIn regarding gmail. You can get to the entire page but not reviews.
From the page: "The part that gets me is how little concern people have with Google and privacy. They can ID you, by IP address, to every single search you make. They keep this data for 18 months or longer. Throw in GMail, where they have your personal information, and they now know the search terms used by a specific person. Couple that with the fact that with a name you can find a tremendous amount of info about a person. There are people using Google checkout where they even have credit card and bank account information...Everyone wants to beat up Microsoft as the "evil empire". Who's looking over Google's shoulder on why they even need most of this information and how is it protecting. Yes, any mediocre DBA can plough through Google's mound of data on the backend and give you a personal profile of each person hitting their services that would scare most people to death. I don't use any of their stuff, because I don't trust them to protect the data, despite the pretty little marketing stuff they put out.
Regarding data mining... I'm not saying that google keeps your mails, I'm saying they are statically processed before reading, before deletion and every time you read it, label it, etc., so probably each word of all your deleted mail is counted and saved in their database... that's in their policy, when they say they save "non personal information" because in one hand no one will be able ever to see your deleted mails, just the amounts of words with some points system information.. I suppouse they give more points to word found in sentences with word "need" and "buy", as well related to the labels you use... but who knows!.
żWho needs this? Google ads. Imagine you always invite people to drink a beer, take an expresso.. whatever... then a good ad for you will be someone that's paying to advertise their expresso coffe machine. I think you get the point right?
Quite simply:
In order for Google to grow it relies on money from advertising.
Archiving the information rather than deleting allows the information to be subject to Googles passive filters and information gatherers.
This allows Google the possibility to see consumer trends in never before seen detail and accuracy.
This trend allows google to more strategically place ad's. And in turn generates more revenue for the publishers and marketers.
My guess is that Google can do this legally because they are not actually reading emails. Therefore Google is not invading privacy. Technically they arnt releasing any information about their clients either becuase its kept internal. In addition marketing and sales has for the most part been about numbers and statistics. With the following technology Google can greatly increase their ad rate statistics.
All Google has done is taken a software package like found on
mxlogic.com [mxlogic.com] that scans for and reports something anonymously. For the sake of information google is using 'key word' filters.
The emails are passsing through filters and scanners in a way no different than that of virus and malware/spyware scanners.
Many people may recall a recent decision by the upper court to make individual email providors such as Hotmail and Google bound by the same laws and regulations regarding privacy as telecom companies and other sources the public believes to be private. For the govt. and other organizations to request and obtain emails they must first obtain a search warrent or have probable cause.
Even this decision will unlikely hinder Googles manipulation of the system for its personal gains. I fear that without regulation on this issue more people and businesses will start to manipulate the system for personal and commerical gains to a point that will ultimately cause one form or more of mass consumer manipulation.