My wording in initial question was a little off and was really just asking about people experiences with development with mapping and annotating maps.
I have begun experimenting with the google maps API and seem to have hit a major issue with IOS6
In IOS6, and trying to obtain users location - you are not prompted for allowing permissions to current location, but instead just prompted with a 'permission denied' notice.
Reading up, it was suggested to add <meta content="yes" name="apple-mobile-web-app-capable" /> after detecting IOS6 but this does not seem to have solved the issue.
This issue must be due to the release of Apple's own mapping solution - anyone got a work around?