715 ILCS 5/3.1
When any notice is required by law, or order of court, to be published in any newspaper, publication of such notice shall include the printing of such notice in the total circulation of each edition on the date of publication of the newspaper in which the notice is published; and the newspaper publishing the notice shall, at no additional cost to government, cause the notice to be placed on the statewide website established and maintained as a joint venture of the majority of Illinois newspapers as a repository for such notices. All notices required for publication by this Act shall remain legal and valid for all purposes when any error that occurs pursuant to the requirements of this Section for placement of the notice on the statewide website is the fault of the printer.
715 ILCS 5/3.1