The query i do is a standard. Google for "wms" or "web map service" if you are interested.

It sure is possible to hard code support for those yahoo tiles into osm2go. But i don't like that idea for several reasons:

- wms is a standard which works with many servers and yahoo stuff is just that: some proprietary yahoo stuff that only works for yahoo. The next user will then ask for google earth images and whatever

- wms is nice as it can be used to display a nice layer selection as you probably have seen in osm2go

- very important reason: yahoo doesn't cover the area where i live

Adding support for all those tiles formats is basically re-writing parts of maemo-mapper. I don't want to do that.

The solution i personally would like to see is a wms service using those yahoo images. If they are free to use this should be possible. Googling a bit about this topic seems to indicate that someone already did this for JOSM. As long as this server provides a valid capabilities file osm2go should be able to work with it.

Edit: I don't mind adding a patch enabling such a feature to osm2go. So if someone wants to contribute yahoo functionality i'll make sure that it will be included in the official releases.