IsDue.by -and- AreDue.by

I need some ideas on what to do. I know I can do a word play on them for a bill reminder service such as:

a. MyBills.AreDue.by

b. Rent.IsDue.by

...and so on. I'm just looking to capitilize on taking advantage of these domains and subdomain additions, similar to Del.icio.us and others like it. I'd be interested in working with other designers/programmers to make things happen.

Any suggestions/ideas/comments would be appreciated. Thanks, HN.