This excerpt taken from the XIDE 8-K filed Aug 31, 2007.
Payees Exempt from Backup Withholding
Payees specifically exempted from backup withholding on ALL payments include the following:*
Payees that may be exempt from backup withholding include the following:
Payments of dividends and patronage dividends not generally subject to backup withholding include the following:
Payments of interest not generally subject to backup withholding include the following:
Exempt payees described above should file a Substitute Form W-9 to avoid possible erroneous backup withholding. FILE THIS FORM WITH THE PAYER, FURNISH YOUR TAXPAYER IDENTIFICATION NUMBER, WRITE EXEMPT IN PART 2, SIGN AND DATE THE FORM AND RETURN IT TO THE PAYER.
Certain payments other than interest, dividends and patronage dividends that are not subject to information reporting are also not subject to backup withholding. For details, see sections 6041, 6041A, 6042, 6044, 6045, 6049, 6050A and 6050N and their regulations.
Privacy Act Notices. Section 6109 requires you to give your correct TIN to persons who must file information returns with the IRS to report interest, dividends and certain other payments. The IRS uses the numbers for identification purposes and to help verify the accuracy of your tax return. The IRS also may provide this information to the Department of Justice for civil and criminal litigation, and to cities, states and the District of Columbia to carry out their tax laws.
You must provide your TIN to the payer whether or not you are required to file a tax return. Payers must generally withhold 28% of taxable interest, dividends, and certain other payments to a payee who does not give a TIN to a payer. Certain penalties also may apply.