For checking in your area: If people are in the same place very close to one another they sometimes get put on top of one another. Click on your own placemark and see if there is a "1 of X" with an arrow in the bottom right corner of the popup. This means there is more than one placemark on top of each other in that spot. Click the arrow to cycle through them to find people REALLY close to you!
Submissions closed! To get a placemark added to the map
0) Check the map to make sure you aren't already on there! Many people submit early and then forget about it.. then they submit again closer to the show ;)
1) GO HERE: http://www.latlong.net/ and get the decimal latitude and longitude of where you want your marker to go. You do this by dragging the map around and clicking to move the marker. Note:There are other places to get your lat/long, this one is just super easy and straightforward.
2) Copy the decimal Lat/Long somewhere, or write it down. Make sure you include any minus signs that may be present... this matters A LOT.
3) please submit this handy dandy google form. I'll be compiling the submissions about once per week into the map itself.