
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:
1. #RIMJobs
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.
2. #susanalbumparty
Susan Boyle's PR team announced the official hashtag for her forthcoming album in November 2012.
They shortly wished they hadn't.
3. #McDStories
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.
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.
4. #nowthatchersdead
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?
5. #WaitroseReasons
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:
6. #kingsmillconfessions
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.
7. #CLitFest
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.
8. #MadeMeSmile
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.
More: If Donald Trump wants to beat Barack Obama’s Twitter record, he only needs to tweet two words