I originally setup my Droid with my Google Apps account as primary. A few months ago I decided to buy a paid app in the Market and couldn't do so using my Google Apps account. Reluctantly, I added my Google Account as a secondary account on my phone, which allowed me to purchase apps in the Market. Now that I can finally use Google Checkout with my Google Apps account, I would like to remove my Google Account from my phone, since I'm tired of being prompted to select an account each time I create a new contact. Will removing my secondary account affect apps that are already installed? What about when updates become available for these apps in the Market?