Tumblr is making you suck and you're making Tumblr suck, so basically you cancel each other out

This afternoon I was in my IT class (Information Technology also know as ICT also know as Information Computer Technology), and two girls were on Tumblr.
Which isn't on topic, at all.
The thing is these two girls were obsessed with looking a pictures of girls partying, making out with boys, their clothes and best of all giving the camera the finger.
And all these photos are of girls over 16, and they have really High Definition cameras.
And I suspect these girls in my class want to be like these "Tumblr Girls". The reason is probably because it's the closest thing you're ever going to get to being a model.
And I noticed that most of these "Tumblr Girls" account names were usually dis-selfrespecting stuff like "NerdWhore", "PartyWhore" and just awful stuff! And then other names that sound really sweet and innocent like "Honeybeeezz", "Flowergirl" and just things you'd think these names belong in a childrens show.
Usually these pictures are of girls in Bikinis, Mini shorts and really short dresses.
It seems as though these girls don't realize these pictures can be "reblogged", copy and pasted, downloaded and commented on. And worst of all they stay on the internet forever 
They don't go away. Someone would've "reblogged" them, someone would've copy and pasted them. So deleting the orginial picture is no use.

Even though it seems fine now, these pictures could turn on you in later life. You couldget turned down jobs, get jobs only to find out the employer only wanted you for what he saw on the internet of you, blackmail and bullying.

And I'm not saying the Tumblr is all around bad, because there are some pretty cool people on there, like my uncle (Shout out to The Bookmark!)
But come on guys, get online wise.

Just a few examples of what I'm talking about:

I am advertising....

My uncles (2nd hand) bookshop.
Today I went in there, there was so many books I wanted.
I mean I usually doubt 2nd hand bookshops and libraries.
But if you go to the right one (to find a good library look for big one to look for a good 2nd hand bookshop go inside and see what you can find).
My uncles (2nd hand) bookshop, is a 2nd hand bookshop, but isn't full of 'old' books. It has the Twilight series *gag*(not the first one, but the Second life of Bree Tanner, New Moon (2 New Moons actually one in white one in black), Eclipse, Breaking Dawn, And the official graphic novel).
Also I couldn't stop reading 101 people you wouldn't meet in heaven, like there was this one guy who will kill husbands/boyfriends of women he wanted to date and keep their body parts in the fridge, it was full of really creepy people (I fascinated by Physcopaths okay? Don't judge).
Also my uncle sells DVDs (he has Charlie St. Cloud, I have been kind of intending on watching that movie). My uncle still has some VHS (for people who are still stuck in the 80s'-90s').
He also has a whole lot of Chick Novels (I wish it rhymed like Chick Flicks, but no they're novels). Like a book called Her about a woman who met a man on a train and fell in love with him but unfortunately he has baggage.... His ex-fiancee.... aWkWaRd, that book sounds interesting.
Today my cousin and I sorted out the science fiction section. And that was when I came across that cool Physcopath book (it's actually possible my cousin is a physcopath, apparently killing animals a lot, is sign of being physcopath, and my cousin has killed fleas she got off her cat, and then showed them to her (twin) sister and I (insects count as animals right? Like in someways?)).
My uncles bookshop is called The Bookmark (because his name is Mark, get it?).
It is on Willis St (Wellington NZ), and it is in like the basement of a shopping arcade. I forget what the arcade is called though...... But it is on the same side of the road as the New World Metro.
PS I asked my uncle whether it was okay that I write about his Bookshop and he wanted me to (he has a blog as well, on Tumblr. but it confuses him as much as it confuses me).
PSS I haven't got the link to his blog, he talks about all sorts of stuff, I saw a  post in the Oscars (although a very brief one).