1. based on Firefox 3.0 (need I say more)
2. incorporates yahoo mail and gmail into its system (my favorite email providers – sorry hotmail a este live mail or msn mail but Gmail is the best email system and i love using yahoo messenger and text messaging inside yahoo mail.
3. It has facebook media bar and has a status bar showing recent updates from your facebook contacts.
6. easily interfaces into picasa
7. even has a great demo or tutorial in the beginning.
8. Social networking and Photo sites friendly!