The static map page can now display up to 20 targets at the same time! Just enter the calls, separated by a comma. It works with wildcards, too, letting you select multiple matches simultaneously. For example:
RAUTAUOMA, OH2RDK, oh2rd*
The exact matches (rautauoma and oh2rdk) are preselected, and the wildcard matches are not.
Implementing this on the live map will be slightly more complicated, but unavoidable. :)
PS. Got my OT2 running with my Garmin Nüvi 350 today. Details will be posted later. It's very cool indeed.