Should I renew my L-L.in domains?

[hugegrowth]

I have a handful of L-L .in domains at Godaddy, are they worth renewing? Some of the letters are i-c, n-d, g-s for example.

As far as I know, there are no LL.in domains, so the L-L are good for two letter acronyms. Or are they a waste? Has anyone had any interest in their L-L .in domains?

Also any good coupon codes if I decide to renew them?