This question may be answered somewhere, but I cant find it.

As a GM what information or use does the information tagged to the end of a dice roll represent? How does a GM use it?  If it is not used, why is it shown?

For example, [roll=1703166901.91015.374660]

This is shown on the new site.

That's a piece of RUBB code automatically generated that, when copied and pasted into a post in the game, will show up as the results of the roll with a tap/mouseover pop-up with the details of the roll.

It's not backwards compatible with the old site so I've never used the feature, but I imagine it may gain more popularity once the user base is no longer split between two site versions.

Interesting. Thanks for the info.