A kleptomaniac is a person who has a strong urge to steal things, even when they don't need or want them. It is a mental disorder where the individual steals without any control or rational motive. Full definition
Following various reports of kleptomaniac kitties, including Oscar from Southampton who made the news for his large collection of knickers, the feline welfare charity decided to ask cat owners to tell them the most unusual cat «gift» their pilfering puss has brought home. (cats.org.uk)
A simple tip of the hat or thanks to the person who introduced you to the cool picture, the insightful article or the video of a cat playing with an otter (no, I won't link to one here, find it yourself) will make them feel good and prevent people thinking of you as a social media kleptomaniac. (premierchristianity.com)
In hindsight he was a charisma kleptomaniac, his magnetism lifted largely from Elvis. (si.com)