Big brother is watching over you

I recently started using gmail and love its features. Like all google products it's different from other existing products and easy to use and I wish I'd started using it earlier. The scary thing is the advertising content on the right. Ever since I started blogging and using google calendar it seems like google knows what I'm up to everyday. When I've emailed people about giving talks or staying with someone it asks me if I want to add it to the calendar. Below it are advertising links which seem very relevant. When I email people about staying with them it tells me about cheap hostels or bed and breakfast kind of places. When I email people about some math research it advertises math softwares and job sites. When I email people about plans in Delhi it advertises movies and restaurants. It's a bit unnerving to see how they read your emails and advise you on what to do. Now that I've started using so many of their products and can't bring myself to switch to other stuff I feel like I've been sucked into the world of google and soon will have daily reminders and updates on what to do, eat, wear, etc. At least microsoft only tried to dominate the software market. Google looks like it's going to take over the lives of geeks.