Hi and Welcome to the Forums!
FYI -- these forums are a user-to-user support channel, not a user-to-RIM conduit. Consequently, those who hang around here do so as volunteers...meaning that it's customary to wait at least 24 hours before bumping...we all have "real jobs" that we must attend to in order to feed our families.
While your original question was written with some challenge for the reader, I surmise that you are wanting to know if you need a data connection of some sort to use your installed apps. The answer is -- it depends. It depends on the app. Any app that needs a data connection (the examples you cited fit that definition) indeed needs one unless it offers some sort of offline capability -- you'd have to research those apps to see if they do so.
Now, that data connection does not need to be, as you cited, WiFi. If you purchase, from your carrier, an adequate data plan, you can ride their network for data needs. Indeed, some apps will require that you purchase an adequate data plan from your carrier since, in using those apps, you will be consuming BB-specific resources hosted by the carriers and/or RIM. Examples of those would be any apps that use the BIS infrastructure -- PUSH email, web browsing, etc.
My advice is to make a good list of precisely the services you want to use and under what conditions (e.g., carrier data network, WiFi, offline, etc.). Then, shop the carrier to see what data plan from them would be required to enable those services. Very often, generic data plans are insufficient. Many times, an adequate plan will be called The BlackBerry Data Plan so that it includes access to the BB-specific resources hosted by the carriers/RIM.
Good luck!
Occam's Razor nearly always applies when troubleshooting technology issues!
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