DEMI Moore has returned to twitter for the first time since announcing her marriage split. The 49-year-old actress - who is usually a prolific user of the social networking website - posted her first message since separating from Ashton Kutcher to urge her fans to be more appreciative of people. Writing on Thanksgiving, she posted: Why do we have only 1 day for giving thanks? Is that why so many people feel unappreciated? Make this 1 of 365 days of Thanksgiving (sic) Meanwhile, Ashton also used the holiday to return to the site. He posted: Im thankful for family, friends, you, & time to reach my potential. What are you thankful for? The 'Two and a Half Men actor last used the site on November 17 - the day Demi announced she was to file for divorce after six years of marriage - to pay tribute to the actress. Ashton - who was accused of sleeping with Sara Leal in September - wrote: I will forever cherish the time I spend with Demi. Marriage is one of the most difficult things in the world and unfortunately sometimes they fail. Love and light, AK. Demi expressed her great sadness when she announced her marriage is over but said she is hoping to move forward with her life. ES