Can I use commas in a URL?

Foo.1.aspx

Foo.aspx?id=1

Foo.1,2,3,4,5.aspx

~/products/view.aspx?id=1
~/products/category.aspx?type=beverage

~/products/view/1
~/products/category/beverage

reserved    = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
                "$" | ","

Foo.1,2,3,4,5.aspx

Foo.aspx?id=1;id=2;id=3;id=4;id=5

Foo.1-2-3-4-5.aspx

index.aspx?c=Foo/1/2/3/4