OnlyNokia5800[dot]blogspot[dot]com will share contents about Nokia 5800Xm.
We include
1. Third parties Applications & Games
2. Themes (a collection of links and websites)
3. Latest information updates from Nokia
5. Sharing between users

Downloading files from this site is at your own risk. But, I will ensure everything is useful to you.
However, they are few applications that are needed to be signed at SymbianSigned, Don't know what is SymbianSigned? Instruction when signing?? HERE
To check firmware version or whether your phone is up to date for your region HERE