IPhone – Windows live hotmail on iPhone

Each Mail account on your iOS 4+ device is able to sync notes. When you have it enabled for multiple mail accounts you're able to have notes stored in different accounts. The Default Account setting will be for which account the notes are associated with unless you say so otherwise (Identical to the Default mail account in terms of functionality). The screenshot below might help - namely showing the Notes app is like the Mail application - an All Notes (Mail) view and just viewing on the individual accounts.

(Source of Photo)

This Apple Support Document explains the Settings ▸ Location Services ▸ System Services screen.

The items on the list are all system services that could make use of your iPhone or iPod's location information. While the page above does not explicitly explain each setting, Traffic uses your location to get data about whether nearby roads are congested or not and uses your anonymized information to help update this database; Setting Time Zone uses your location to automatically select what time zone your phone should be set for; Location-based iAds uses your location to serve relevant advertisements; Diagnostics and Usage is rather unexplained, Compass Calibration uses your location to calibrate which direction your iPhone thinks it is facing, and Cell Network Search uses your location information (anonymously) to help build a crowd-sourced database of the location of cell phone towers.