Safari "frequently visited" sites behavior seems odd

[shawnforever]

When you open a new tab or browser window, Safari shows your Favorite sites and your Frequently Visited sites. How it chooses the latter seems odd. For example, listed now (among other sites) are:

• Wikipedia entry for Peru (visited 9/1)
• Six Flags Texas park schedule (visited 8/30)
• Dominos Pizza Delivery (visited 9/7).

These are neither "frequently visited" sites nor are they particularly "recently" visited sites. I don't know why they are listed. I am on my computer for many hours each day. These sites seem rather randomly chosen.

Is anyone else perplexed at how Safari shows their supposedly "frequently visited" sites?