Twitter website does a great job detecting http and https links in statuses and makes clickable links for them. However uncommon URI schemes, like the ones with mailto, ftp, openmaps, etc. names don't get recognized and users can't click on those. I think adding this would make the user experience more fluid.
It is important that the regex should be a general one, that matches links like this also: openmaps://n/957085286 (taken from this status http://twitter.com/#!/zssz/statuses/7396822796476416). In case you are wondering what the openmaps:// link is: It is an URI scheme that OpenMaps for iOS app uses. The openmaps://n/957085286 link for example identifies a place of OpenStreetMap.org in the app. If you tap on that then OpenMaps launches and it shows you that place where you can comment on it via Twitter, calculate the route to there, add it to your contacts, send the link to it via email to your friends, edit the place, etc. You get the main idea. Best regards, Zsombor Szabo IZE, Ltd. - http://izeize.com/ -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk