Through the tax filing deadline of April 18, 2011, the IRS has reported that there were almost 101 million e-filed returns, representing an 8.8% increase from last year. This makes nearly one billion tax returns that have been filed electronically since the e-file program went national in 1990.
Taxpayers who have not yet filed their 2010 returns can still e-file through October 17, 2011. However, taxpayers who want to file amended returns for any tax year must submit them by paper; e-filing cannot be used for amended returns.
Source: IR-2011-46, April 18, 2011
A retirement account to which up to $4,000 (or $5,000 if you are 50 or over) may be contributed for 2007, but deductions for the contribution are restricted if you are covered by a company retirement plan. Earnings accumulate tax free.