CrowdFlower does indeed offer an application for the iPhone. This app, however, is related to the Give Work program, which allows workers in Kenya to have higher wages.
Use a program to access the iPhone/Touch system (jailbreak required), such as iFunbox.
Yes. The iPhone has web access where you can go to Twitter.com and access your account. You can also download an app, such as tweetdeck, to access your account.
There is no program called Microsoft Online Access, but there is a program called Microsoft Access -- it is a database program.
iphone
yes
There is no such thing as a mini iPhone. If there is, it is a knock-of. If it is a knock-off, it has no access to the App Store. If it does not have access to the App Store, then this product should not be called an iPhone.
It depends if you want to use the features that are based using the internet. You can use your own (or other) wifi which is normally free or get a data plan on PAYG. So to get the best access from the iPhone 4S and use all it's program's you will need to be able to access data.
Apple's iPhone SDK is free. (See links below). Once you have created your app you join the iPhone Developer Standard Program, which costs $99 and provides you with access to the App Store where you can distribute your free or commercial application to millions of iPhone and iPod touch customers.
an iPhone can not be used to provide internet access to the PS2
Yes
Yes
You need to use the program RedSnOw to jailbreak an iPhone 5.