Tip: change Magento page title
To change the default Magento page title "Magento commerce" to your own, go in admin and follow these steps:
System -> Configuration -> Design -> HTML head
In Default title set your store's default title, this will appear in pages that do not have Title specified. In title Suffix insert your store titles suffix, i.e | YourStoreName
Save settings and enjoy your customized Magento page titles.