Anyone else sign up for this? I read about it on PandoDaily (not a frequent traveler site, tech news) and it sounds promising. For those of us who manage multiple cards in order to increase our points and rewards, this might be a good product.

Since the product isn't live yet, its tough to get too detailed, but here are some downsides I've thought of:

• $50 a year annual fee - is the convinience factor / potential smarter earnings / only having to carry one card worth the fee?
• What sort of consumer protection exists, or do the charges ultimately just get routed to my credit card.
• If my Wallaby card is lost or stolen, are all of the linked accounts now compromised?

If you'd prefer not to go through a referal link, here's the regular link: http://www.walla.by

First 5k users get 1 year free, and they're still under 5k according to their twitter account.