Apparently if you invite me to be a friend, and I accept, you send me gift, I send you gift.
we do this for like 3-4 days, we reach friendship level 2. the rewards is 10,000 experience.
This is very helpful levels 1-15, and decently helpful levels 16-20 , and is nice level 20+ if you have multiple friends.
I'm level 23, and 13 friends @ 10,000 experience , would give me a full level.
The higher the level, the higher you can power up your pokemons CP , and higher CP pokemon in the wild you can catch.
which allows you to be able to do stronger gyms/rains and able to catch rare pokemon ect.
Me and my Girlfriends mom are willing to share gifts every day. add us both.