If you are like me and enjoy identifying/observing plants and animals, then you might be interested in iNaturalist.
So far I have uploaded "observations" (basically photos and my comments) on two different difficult-to-identify trees that I have seen growing in my area.
After uploading photos, I was presented with several "suggestions" to what trees might be. It accurately identified both trees within 3 guesses..and within a few seconds.
The trees were Acacia (Silver Wattle) and Silk Oak. iNaturalist
iNaturalist is a social network for naturalists! Record your observations of plants and animals,
share them with friends and researchers, and learn about the natural world.