Handmade Sudoku Puzzles

Here are a bunch of Sudoku puzzles I've made myself. They all involve odd variations (which I think are more fun) and so I'll explain the rules for each of them near the link. For Sudoku enthusiasts only!

Link	Description
Product Sudoku	Each row, column, and irregular region should have the numbers 1 through 6. In addition, the numbers in the square dotted areas should multiply to give the number noted there.
Conjoined Sudoku	Each row, column, and box of EACH Sudoku grid (there are two) should have the numbers 1 through 9.
Magic Square Sudoku	Each row, column, and box should have the numbers 1 through 9. In addition, there are five places where a 3x3 rectangle of cells (not necessarily corresponding to a box) forms a magic square.
Arrow Sudoku	Each row and column should have the numbers 1 through 6. In addition, a number in a circle is the sum of all of the numbers on the arrow connecting to it.
Greater Than Sudoku 4x4 1 | 4x4 2 | 4x4 3 | 6x6 1 | 6x6 2	Each row and column (and sometimes irregular region) should have the numbers 1 through 4 (4x4 puzzles) or 1 through 6 (6x6 puzzles). In addition, greater than or less than signs in the walls indicate that one cell's number is greater than or less than an adjacent cell's number.
Seven Sum	Each row and column should have the numbers 1 through 6. In addition, the sum of any two cells connected by a "7" should be 7.
Crazy 8s	Each row and column should have the numbres 1 through 7. In addition, the sum of any two cells connected by an "8" should be 8.
123 Sudoku	Each row, column, and box should have the numbers 1 through 3, three times each.