Brightkite API

[Tom Hardesty]

Hello there,

I am researching your costs, for consideration for use in an upcoming project and want to understand the cost at different levels of use. please let me know some information about Brightkite API

what are your program fees?
fees for usage of your API?
usage limits?
Is commercial licensing available?
Is Signup required?
Is Developer Key Required?
Is an account required?
Authentication Model?
Protocols?
Data Formats?

eagerly waiting for your reply.

Thanks
Tom