Well not a lot of people I know are active on this forum. It would help by providing a contact list etc.
It should help those who come from entire different areas, such as myself, and do not want to pay our phoneline carrier $1+ a minute just to use our phone at Wacken. I can use my wi-fi at Wacken to get in contact with people I wish to meet.
I can do plenty without an app, but advances in technology are meant to make things easier. Trains were once new technology as well. So was the light bulb. I do agree that people rely far too much on technology for simple daily tasks, but I am not going to degrade anyone for using a tool to make their life easier, because without apps/PC programs there would be no Wacken forum in any form.
That's why it's "suggestions"