Yea it is i have used it for ages because i dont want to jailbreak !
The iPhone doesn't have a safe mode unless it has been jailbroken (hacked) and springboard has crashed.
Yes it's safe.
no it is not
yes it is safe
because it is safe
limera1n is an iPhone jailbreak tool
Yes! My iPhone officially turned into a GBA and SNES with a calling function :) CoolROM is the best site ever.
Google Talk can be used on the iPhone.
For an official Apple iPhone tutorial, go to: http://www.apple.com/iphone/guidedtour/tour/large.html
There are many free and paid apps one can use with their iPhone's. The "Free Friend Finder" is one such app. The majority of apps are hosted by iTunes, therefore, they should be considered safe to download.
It is not safe to jail-break your iPhone if you think it is infected with spy software, because apart from voiding your warranty, some of your applications may crash, and increased vulnerabilities to spyware.