Aasha 
"[@Wayneponeth":](/images/2408302#comment_9173966
)
It tends to be the life cycle of any service.
_
*1: Offer a service for all users.
*
*2: Grow popular+__because+__ they're open for all services.
*
*3: Abruptly turn away the less wholesome users of the service._
*
Basically everyone's open to allowing anything as long as they're fresh on the field. Soon as they think they have the ability to stand on their own they turn away the "undesirables" from their service. Sometimes they don't realize how much they relied on them - like in Tumblr's case.
It tends to be the life cycle of any service.
_
*1: Offer a service for all users.
*2: Grow popular
*3: Abruptly turn away the less wholesome users of the service.
Basically everyone's open to allowing anything as long as they're fresh on the field. Soon as they think they have the ability to stand on their own they turn away the "undesirables" from their service. Sometimes they don't realize how much they relied on them - like in Tumblr's case.