No Problem. ATM SQ provides me the best Support i've ever get, and almost the fastest.

i only ask, cause the public questions are answered and the private was still open

Some ideas to reduce traffic:

• Caching Images and maptiles
• only loading maptiles if mapview is open
• updating live Rankings only all 30 sec or let the user choose the Intervall in options

@Marcin

Is there any size limit for cities? If not, please add Sperenberg, Brandenburg, Germany ;)

It's already released.

For what do you need a pause button? You can leave event and join later... or simply let your phone running...