The U.S. Postal Service announced in October that First-Class mail single letter rates will increase by 1 cent, from 44 cents to 45 cents, on Sunday, January 22, 2012. This represents a 2.2% increase. So save a penny and eliminate the hassle by buying some of those "Forever Rate" stamps before the price change!
It has been nearly 3 years since the last price increase for First-Class mail in the U.S. The last increase was a 2 cent increase effective May 11, 2009.
Who actually uses mail these days for paying bills? Do what I do and start utilizing online bill payment services. Paying bills online allows me to save money on stamps, save time (no more handwriting, tearing, stuffing, licking and mailing) and headache. Click here for more information. I use online billpay and direct debit/credits for 95% of my bills.