A milestone, in its general context is a stone placed at intervals, sometimes at a mile on some roads.
In the context of subscribeer countEdit
YouTube sometimes has its users post milestone videos for certain subscriber counts, often times at multiples of 5.
In the context of user NunicaMusicChannel, who is part of the Nunica Internet Social Alliance, some subscriber milestone videos took more famous numbers, such as Route 66, Union 76 and Windows 95, and even made a recap video as a 100 SUBSCRIBER MILESTONE.
|Nunica Internet Social Alliance|