How do I modify the View all page?

Hello!

Some of the titles there are over 20. Are any positively truncated? It’s a DB setting that the limit ought to be 100 char (I think) for the title.

There is no setting for getting the title on to one line. In the future you may decide to use the right side of that listing area, but here is some CSS to further encroach on it:

.geodir-entry-content {
    width: 80% !important;
}