Email carries no cost for the sender but is very costly to the recipient because it might be a waste of time.
Have an email client app (on smartphones, tablets or the web), that helps you get rid of time wasting emails quickly by:
1. Telling you how long the email is.
2. Estimating how long will it take to read it, taking into consideration external links that you might have to visit.
3. Showing how many users considered the email or the sender as irrelevant or spam.
4. Based on all these factors, plus your previous behavior, and some text analysis, show you a recommendation of either “delete” or “read.”
This might be a better, faster and more accurate way to decide on what book to buy, movie to watch, etc.
Software that uses multiple sources of reviews analyzes them and creates a synopsized aggregated version of the best ones.
To be aware of what is a rip-off and what is original.
Allow people to publish rip-offs (and who did the rip off) they find and show the original. This might help people stay away from rip-offs, show them and give credit to the original, and shame the one(s) doing the rip offs.
Many times and in many different fields there are varying opinions as to how to do things. Let the crowds decide.
Allow users to suggest subjects they want to find out best practices about, like how much time to cook roast beef, what’s the best way to remove coffee stains, etc. Then allow others to write what they think are the best practices. Finally, let people vote what they think is the best practice.
You are making a recipe for a different number of people than usual and need to know what changes to make in preparing and cooking it.
A calculator that lets you choose the recipe and the number of people you want to feed, and gives you the right preparations and cooking instructions for that many people.