yeah the search sucks, just use google with site:talk.maemo.org
there were some other apps to do this also, but i am not sure of the current status.
iamhere is dead, i think. here is another recent discussion:
http://talk.maemo.org/showthread.php?t=54546

anyways, if you want it visual, maybe someone can integrate it with gpsgate.com buddytracker or something similar. (this symbian app uses that)