Not sure how to integrate it but location2sms which sends/receives GPS via SMS and/or email already intergrates to OSM in the app, I wish I knew how to patch the sharing modules into modrana but the source is here https://gitorious.org/location2sms.
I love modrana and the only mapping feature missing on my N900 is fast easy cross platform location sharing. I also totally get that feature requests fit in after fixes and existing feature upgrades, but thanks for listening to us!