It really depends on the item. That said, if you're on a timeline or just want to make sure your item is seen as soon as possible, you can help it get noticed:
- Mention your deadline in the item description - For example, if you're moving or simply need the space, make a note of that in the description.
- Make sure your description captures some keywords - This will help people find it as they search.
- Add a comment to the Facebook story - Take it one step further and tag friends you think would be interested in the item. Both of these will help draw more attention to the item(s).
- Invite your friends - With more users comes more potential interest in items as well as more items that you may be interested in.