Mobile site aka figure

[jlm42]

If you send an email to a service provider, the copy of the sent mail on the mobile site has "aka" and then a number (in red on the two examples I've seen) next to the service provider's rating.

Does anyone know what it means? In both cases I've seen when I've clicked on it the response was "no aliases found" so I'm not sure what the number is supposed to signify.