Data range search functionality
A search and report datapage should have the ability for users to add a date range as a From: [Date] & To: [Date] to pull a months in the past rather than as a relation of today.
EXAMPLE: Registration Date From: [Jan 1, 2010] To: [Jan 31, 2010]
This is possible by adding a second criteria to your date field in the search form. One criteria set to >= and the other to <=.
Kia Fallahi commented
For those who are/were interested: This functionality has been added to Caspio. Recoup your votes.
This is possible using Criteria function. Add 2 criteria for your search term in Search properties, and configure one for greater than or equal to and the other less than or equal to. (I too thought it wasn't possible until I put in support ticket :) but they showed me how.