This is a Re-Post--if you haven't seen some postings from other friends lately, there is a Facebook algorithm that MAY have prevented you from seeing their posts. To fix it do this: On your homepage click the "Most Recent" title on the right of the Newsfeed, then click on the drop down arrow beside it and select "Edit Options", click on "Show Posts From" and change the setting to "All Of Your Friends and Pages"
Face Book algorithms that are meant to help people, by customizing their facebook experience, but in the process, some friends that they may want to follow, have been neglected.