Did that problem persist after you restarted Maemo Mapper? What is the location (lat/lon would be nice, or just city/state/country) in the screenshot?

Landmarks (similar to Google's "Restaurants near Houston, TX" functionality) are something I want to get into Maemo Mapper, hopefully even incorporating Google Maps' functionality. When that goes in, the ability to add landmarks on the fly should be easy.

The hardest part of allowing the user to add landmarks is going to be organizing them. You can create a landmark GPX file for your home, and one for your workplace (you can actually do this now with single-point Routes), and you can load one with all of the gas stations near you, but if you "Add" a waypoint, which landmark set should it go in? Do you keep track of all loaded landmark files and give the user a right-click menu to choose from? Does it automatically save?

It'll take some thought, and the priority here is UI cleanliness. The menus are already getting pretty full... It was nice back in the day (pre-release) when there were so few menu items that there were no submenus. Now it's requiring more clicks to be useful; I don't really want that trend to continue.

Anyway, a click-and-hold would be appropriate for adding a mark. It's just a matter of data organization and not confusing the user...