Ask HN: I have some generic Twitter usernames - what should I do with them?

I have 'query' and 'dir' Twitter usernames. I built a simply query service and attached it to these accounts (not up atm, moving it to another server tonight) but does anybody have a better idea of a good service to build around these accounts?

The service I built only had support for weather queries (ie @query weather <postcode>) with the intention of adding more services. What else could I add along with weather etc?

Willing to listen to any ideas or if anybody wants to work with me on building something more useful at these accounts.