Simple to use, put in what maps you have spare, and what maps you need. Searches for other people with your needed maps that need your spares. Map for map trading made very easy
Credit to u/awlincoln
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The basic information shared is simply this API: https://www.pathofexile.com/api/profile
If you view it while logged in you'll see the same information as what poemap.live will see. This information is available to the specified 3rd party tool even if everything else is set to private on your account (hence the explicit authorization screen).
You can remove access at any time using this link which will immediately cut the connection.