1.   Probably the biggest unknown is what cable consolidation may mean for the price of subscriber television and broadband services.

2.   Perhaps the biggest unknown is the potential impact on a wide range of health products from condoms to pacemakers that also use silicone.

3.   The biggest unknown hovering over the company is the potential outcome of an inquiry into its accounting practices by the Securities and Exchange Commission.

4.   The biggest unknown is where the English name for them came from.

5.   The biggest unknown, all agreed, was the US military response.

6.   The biggest unknown, of course, is how investors will handle the hundreds of millions of Palm shares that will flood the market.

7.   The turning of that corner is when the biggest psychological unknown could have its test.

8.   When you live in a house, the biggest unknown is what the mailman is going to bring you.

9.   While investors hope for a more even-handed application of the law in Russia, the biggest unknown may be Putin himself.

10.   The biggest unknown remained the voters.