[ebranig]

You're being ridiculous, what if I brought a calculator to a poker table, that would get me banned?

Here's the bottom line-

1. They are not cheating.
2. My guess is that they slow down games
3. People who use them obviously cannot calculate odds and most likely don't know how to play poker very well, therefore I welcome people who use them at my table.
4. Finally, do they really give you that much of an advantage? NO. what do they give you? NOTHING.