What is this thing called love?

[lugoteehalt]

Anyone know what this symbol means to the extreem left of a post in the forum listing?
http://justlinux.com/forum/images//dot_folder.gif
Doesn't say at bottom of page.

[danimal1009]

If i remember correctly, the black dot means you posted on that thread.

[lugoteehalt]

Right, I just looked at it when not logged in and there's no dot.

Thanks.