By now, nonprofits should be aware of the IRS crackdown on 501(c)3 organizations who did not submit the required 990 form for 3 years. They lost their status as 501(c)3s and could no longer claim to donors that any donations would be tax deductible. This action protected donors from nonprofits who may have ceased business, yet still claim to be in existence; nonprofits who have changed their mission, or simply was unaware of the filing requirement. A detailed discussion of this IRS action is here. Also on the link is a video on how to get their exempt status back.