It's just used to keep a thread active. If someone doesn't post for a while the thread slips down lower on the list. Posters will "bump" it up the list.
Edit: oops HRC beat me by a few seconds!
'06 330ix | 6MT | TS-BDL-BW | ZSP | ZPP | heated seats |... mods | cf splitters painted TiAg | spoiler | blacklines | short shift knob | cf trim |
*** winter setup: 17" ASA JH3 & Dunlop WinterSport M3 DSST ***.
'01 325xi | auto | TS-GDL-BW | ZPP | heated seats |........... mods | spoiler | mudguards | blackout grills | clear lights | halo projector headlights |