From viral videos to Last Song Syndrome-inducing songs, YouTube has become an entertainment hub for an entire generation of Internet users and watchers, now that it has finally hit (and exceeded) its eighth year from its first video posted back in 2005.

Branded 3 reports that from the first-ever video, one called Me at the Zoo, the array and variety of video content has become wider now.

Where is YouTube headed?

Far from being over--as what an April Fools' report said last month, wherein YouTube is supposedly shutting down--it seems that its only aim is to grow, grow, and grow some more.

According to The Social Times, YouTube currently has more than 800 million monthly unique visitors, approximately 72 hours of video content uploaded every minute, and four billion hours of video viewed per month.

Here's to the viral videos that have been hilarious or caused headaches over the years.

Leave Britney Alone

Remember his video in 2007, when he defended Britney's supposed comeback piece for the MTV Video Music Awards in a very passionate video?

Yes, that is Chris Crocker, blogger and fellow Southerner, who according to The Hollywood Reporter, only wished for people to stop bashing his idol Britney so she won't to follow the path of the likes of Anna Nicole Smith.

Rebecca Black's Friday

Instead of becoming a hit like Justin Bieber's Baby back in 2010, Rebecca Black received a slew of haters, which, as reported by The Daily Mail, led to her being pulled out of school because of all the bullying.

"When I walk by, they'll start singing 'Friday' in a really nasally voice. Or, you know, they'll be like, 'Oh hey, Rebecca, guess what day it is?" said Rebecca Black to Daily Mail.

Well, stardom has its ups and downs, and Rebecca just happened to be on the wrong side.

Harlem Shake

What led to this trend becoming a viral hit is the fact that so many people followed the craze and posted their own versions of the video. What's interesting to note is that the concept was started in Queensland, Australia by five teenagers. Here's the supposed original Harlem Shake video:

Gangnam Style

Comparatively more long-lasting than the Harlem Shake, Gangnam Style not only paved the trademark invisible horse dance, but also pushed PSY to stardom.

Gwiyomi

And now, one of the latest craze taking over Asia and seemingly a fitting replacement to the Harlem Shake craze is Gwiyomi. Known as The Cutie Song, it's a fitting follower to Gangnam Style (though not yet as popular), as many young adults are now making their own videos to follow the Gwiyomi Craze.

Watch the video of the original singer from South Korea, Hari, here: