How do you gage application engagement? The facebook numbers are fairly useless and can be misleading. It is a good idea to break and track users into different groups. Like fluff friends does this with creators, sharers, and consumers. Also compare viralness and stickyness. Both need to be tracked. Time spent on site, page views per site, number of monthly visits, number of content items added are some examples of good numbers to track.
What makes an app fizzle out? Is the app dynamic and is there something new each time the user comes to visit. The type of app also matters. Is it something that you only need to do once? The best apps always have more tasks for the user to do.
Packrat is a very engaging app and looks good. Engagement is different for each app. The more the user is involved the more the engagement. Ways to improve engagement include unlock able levels or features and always adding new things. Also user generated content is a great way to bring users back. User forums have also been very engaging for users to create a community around your app. Some apps elect a user to be the moderator of the forum and to filter feedback.
no comment untill now