Entry IDs increment with each new submission. GravityView allows a user to see an entry's ID (in the URL when directly linked), therefore an observant user can identify the total number of entries. Additionally, they can identify how many entries have been submitted within a certain span of time, given two or more and knowledge of the dates they were submitted.

This is not really acceptable in a business environment when entries correspond to orders placed. This information provides too much insight into a company's sales volume. We should have the ability to keep this information hidden from the user.