Profiles in Preferences

Is anyone filling in the Profile field on their user Preferences page? How do you get to another user’s profile? I see that when I click on a user’s image something pops up that sometimes contains a line or two of text. Is that the Profile field? Is there a way to have just a few lines in the popup and a longer profile for people to view?

[Tip that I discovered when experimenting, for people who don’t know this, when you click a user’s image if you click the very large image that is part of what pops up you are taken to a page showing their posts and a lot of other stuff, but not their profit or web page. It’s the same page you get when you click your own image.]

How would you get to the web page specified in a user’s profile?