Usually a term known as subscribing to someone on youtube, where you click that little yellow button in order to keep track of their newest videos and favorites. However people use it for other reasons such as:

- Trying to be at top of the subscribers list (On a popular channel most likely) to get a lot of views and pretty much a hundred subscribers overnight.
- To try your way at "The person with the most subscriptions" and get easy subs out of that. Many have thousands for example I have 4895 right now. Only a few (Such as classicusernames) have over 50000.
- To put someone at the top on your subscription list, just for a little gift of views and/or subscribers.

The act of extreme masturbation. You must "knock one out" whilst in close proximity to any of the following; Your mum, a nun, your boss, a member of parliament, George Michael. A person with capabilities to act upon catching you mid self-abuse obvisouly ups the ante. Ejaculation must be reached before your danger wank target comes (no pun intended) to investigate. The higher the chances of being discovered with one's pants down, pulling one's war face is obviously where the danger comes from. The more danger involved the harder (or softer) it is to complete the task in hand (snigger). The more dangerous the better. The chance of being arrested, pummeled by an angry father or having your hand severed by an arab's sabre means that you are a pro "Danger wanker."

Usually referred to "Following" someone on YouTube

Normally subscribing will be used for a website called Youtube, but it can be used for other sites. On Youtube you can try your luck and see if you can get enough subscribers to become a youtube partner and, because of the adds in the side of your videos and channel im pretty sure you can make some money from it. Although im not positive so you might wanna check Youtube for it.

a journalist whose work is below standards.

Subscribe to Pewdiepie.

Usually on YouTube, when you subscribe to a channel, you receive notifications of that channel's activity in your YouTube feed. People wanting to grow their channels ask and beg for you to subscribe to their channel, usually at the end part of the video that everyone skips anyway. The more subscribers they get, the more popular their channel becomes. With all these subscribers, they grow an audience, a fan base, they become popular on YouTube. Most YouTube channels that try to achieve this never will, and the people that happen to do so eventually die having achieved nothing in real life.