I am a newbie in HTML5 and geolocation. I want to know the following before starting a project: Is it possible to create an HTML5 application that: a. allows a user to mark a location on a map (e.g. google maps) from a mobile device b. allows a user to enter more information (text & images) per mark c. this map with the marked location appears as shared for other users d. other users can submit their marks as well e. marks need to be verified by an admin before appearing on shared map If it is possible, can you please indicate the level of difficulty for this? Are there any resources, tutorials, APIs that can help me towards this direction? Thanks, Kadjia