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Hashtags are ten years old.
The # symbol is, according to the BBC, used 125 million times a day on Twitter.
It enables users to engage in an online conversation on a subject line.
Because Twitter's so good at discussions.
Here are some of the worst hashtags to ever grace the platform:
Back in 2012 Research in Motion, the company behind Blackberry (Blackberry was a brand of smartphone, kids) decide to recruit.
Being a tech company, they had the perfect hashtag ready to go.
Susan Boyle's PR team announced the official hashtag for her forthcoming album in November 2012.
They shortly wished they hadn't.
2012 seems to have been something of a watershed for Hashtags.
In an attempt to generate a family-friendly vibe of nostalgia for the food chain, McDonald's asked people to tweet their tales on the hashtag.
@tonymanolatos Dude, I used to work at McDonald's. The #McDStories I could tell would raise your hair. — Alex Roth (@Alex Roth)
Rick Wion, McDonalds' social media director later told the L.A. Times:
As Twitter continues to evolve its platform and engagement opportunities, we’re learning from our experiences.
Twitter reacted to the news in April 2013 that the first woman to run Number 10, Margaret Thatcher, had died.
People thought, due to the spelling, that pop sensation Cher had died.
Do you believe in life after Cher?
When Thatcher died but some thought it was Cher... #nowthatchersdead remains a firm favourite. Happy birthday, hash… https://t.co/er5pYNTk5O — Elizabeth Bananuka 🇹🇿🇺🇬🇷🇼 (@Elizabeth Bananuka 🇹🇿🇺🇬🇷🇼)
The supermarket asked people to list the reasons they shopped at the upmarket store back in September 2012 (2012 again!).
You can guess what happened:
I shop at Waitrose because Tesco doesn't stock Unicorn food #waitrosereasons — Leonie (@Leonie)
I shop at Waitrose because the toilet paper is made from 24ct gold thread. (Unless its the Essentials range) #waitrosereasons — Geetee (@Geetee)
I shop at Waitrose because darling, Harrods is just too much of a trek mid-week. #waitrosereasons — Alfred (@Alfred)
A completely terrible, lazy, poorly though-through ad campaign.
It's bread. It's bloody bread.
It's not some sort of guilty pleasure. It's a half-arsed lunch sandwich that's gotten a bit crumbled and sorry for itself after a tube commute.
Dear Kingsmill, I made a sandwich today and didn't butter one of the slices of bread. I'm living on the edge. #kingsmillconfessions — Mich ••• (@Mich •••)
I prefer Hovis. #kingsmillconfessions — Mark Johnson (@Mark Johnson)
@alexhardy Dear Kingsmill, I used your bread wrapper to suffocate myself during some auto-erotic asphyxiation. #kingsmillconfessions — Mich ••• (@Mich •••)
Chester Literary Festival, there is no way you didn't steer into this one. You knew.
You put aside your copies of Lady Chatterley's Lover, went straight onto your social media planning schedule for the festival and thought, screw it, any exposure is good exposure.
Both Cheltenham and Chester seem to be guilty of this hashtag sin.
#Chester Literature Festival - #HollieMcNish winner of Ted Hughes Prize for #Poetry signs up
#CLitFest Nov 12-19… https://t.co/Fd0RlTK0yR — Everything Chester (@Everything Chester)
Just not sure the Chester Lit festival hashtag was thought about and no, I'm not going to search for it! #CLitFest — Laura M White (@Laura M White)
Vodafone's hashtag in 2010 was hijacked by Twitter users to pivot the PR campaign to a publish tax avoidance allegations straight onto the company's website.
Hey everyone @VodafoneUK are giving away prizes for the best tweets with hashtag #makesmesmile. Anyone have any good ones? — UK Uncut (@UK Uncut)
The thought of an ill conceived PR stunt getting in the mainstream media #mademesmile pay your taxes please — 𝔏𝔬𝔯𝔡 𝕻𝖗𝖔𝖇𝖆𝖇𝖑𝖞𝖉𝖗𝖚𝖓𝖐 (@𝔏𝔬𝔯𝔡 𝕻𝖗𝖔𝖇𝖆𝖇𝖑𝖞𝖉𝖗𝖚𝖓𝖐)