Check your group memberships. If you are in one and assigned to a role that has the capability to "pay group liabilities and receive group dividends" this will happen. Members in a Role with this Ability will automatically pay group liabilities and receive group dividends. This means they will receive a portion of group-owned land sales which are distributed daily, as well as contribute towards things like parcel listing fees.
Group owners are often careless with their settings and this can have interesting ramifications. When I first came on SL, with a different account, I had quite a windfall due to this when a group with assets was dissolved, and being a newbie I had no idea what to do about it or who to give it back to!
For such a small amount, it's likely that this linden went towards a listing fee.