[St Charles Owl]

Not quite, SCO, but you're on the right track. If things are going well for each player, it's unusual for anyone except the last player to score a point (us oldies call them shots, but it's more and more common to call them points). The trick is to try to engineer a situation where the opposition team is forced into playing shots that are more difficult.

Each shot played can be given up to 4 points for accuracy and the resultant position. 0 is a complete miss and 4 is exactly what was requested by the skip. Sara obviously did what was required for all of her shots. Over a possible 10 ends at 2 stones per end she would have scored 80 points. None of this matters as far as deciding games is concerned, but is a good indication of each player's form as well as the overall team performance.

Of course, when I tried to access the website to give an example of what I mean, I couldn't get on!

That makes sense.  Essentially as you say its a record of the accuracy of the individual players and how they are performing irrespective of the team result.