Hi @oivas,
Sending links via wallet memos is seen by many on this platform as spam/abuse (as noted in the image shared).
Crypto.piotr does it a lot. I personally don't mind and might respond if the topic is close to my interests, but it still is frowned upon and non-acceptable behaviour.
It is a shame because he does do a lot of good for the Venezuelan community, but his actions don't always follow the blockchain guidelines.
Hope this clarification helps.