I've added a marker but wonder whether this has long-term possibilities. It seems not many people have added markers yet (although this may relate to the readership of open threads).

Regarding physical movement, it seems to me that lots of LWers are relatively mobile, even measured on scale of years. examples: high school students who travel to university or elsewhere for work reasons; university students who finish & get employment elsewhere; postgraduate students, contract researchers, academics. Also seems like there are plenty of people willing to consider alternative locations based on future opportunities.

My concerns are not just related to physical movement but also virtual movement - think of the number of members who were active here even 2-3 years ago but are no longer involved. Or just how short-lasting many free email addresses are. Offering to actively manage the map is thoughtful but what if you decide to move on from LW? Particularly as you are a relatively recent joiner, how much confidence should we have that you will be around to manage the location map in future?

All that said, I might PM a member from looking at the map if I happen to be visiting their location ... assuming their posting history suggests it might be worthwhile.