FileLater (http:// filelater.com) is offering one more day of free IRS tax extensions with coupon code "April12". They ran a promotion last week, and looks like they extended it for one more day.
It's much easier & faster than printing & mailing your IRS 4868 form, and they'll validate your return for errors. In a day, you'll get an email that confirms your application was exteneded by the IRS and your new tax deadline is October 15th.