I can tell you that I had occasion to use it just recently, because were participating in a research program that the government put forward to improve the site. They asked users to walk through different scenarios and give feedback on how easy or hard it was to use.
In particular, we looked at PPE. If you were to try to procure masks, visors or other things from the government, we looked at how easy it would be to go in and learn about those things.
I think we found some really good improvements, and we always constantly need to improve.