To clarify a couple things:
1. it still works.
2. deselect the 2 yr option
3. deselect the manual renew option
4. select private whois (free w/ 6+ domain purchase)
5. if you're adding a ton of .mobis, and in your cart they have it displayed as: "example.mobi quantity: xx domains" there will be a link below that "quantity" to "view list" . Click that to see all the .mobis you added.
If you don't see the .info offer, it means that that example.mobi doesn't have an available .info, so delete it, which will put the next one on the list at the top. If it has an available .info it'll show you the offer for $.49. If not, delete again.
It's a little labor intensive, but for throwaways you can't beat a year plus free privacy for $.49 freakin' cents.