Who needs Twitter?

Brown, who is autistic, was the originator of #TheAbleistScript, a hashtag late last year through which people shared their experiences of the well-meaning but ultimately patronising things people sometimes say to disabled people, such as how "inspirational" it is that they accomplish things.

"I don't have a way of measuring the impact the hashtag had on people who are not disabled, but I did see a lot of posts based on the hashtag saying 'listen to what these people are saying'," Brown said. "I'd gather the vast majority of people who wrote those messages do not identify as people with disabilities."

Brown was struck by the geographical diversity among the disabled participants in the #TheAbleistScript conversation: "A lot of disability activist stuff seems to stay where it's at, whether that's in the Oceania area, the US or Europe It's interesting that these hashtags travel differently. They don't stay in the country."

Twitter's lack of walls can, of course, cause problems. Just as many disabled people find freedom on the platform, many find abuse that causes them to quit Twitter altogether Brown recently got death threats over the platform.

"On Twitter, you do open yourself to the world of online abuse from random strangers," Brown said. "If you belong to any marginalised group, you're more likely to be the target of online abuse Different people have different personal comfort levels and capacity to engage or not engage. I know people who have decided 'I'm going to stay because this platform is really important to me' and people who've decided 'that's not safe for me and I'm going off of it.'" Brown is staying put.

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Some groups are actively looking to exploit (for non-abusive reasons) the relatively porous borders of Twitter's nebulous networks. For example, in Catalonia, the autonomous community in north-east Spain that may or may not gain full-blown independence at some point, the regional government is using Twitter as a way of shoving Catalonia onto the world stage.

"Twitter is useful because there's a lot of horizontality you can knock on the door of whoever you want," said Jordi Arrufat Agramunt, an advisor at Diplocat, Catalonia's public diplomacy council. Arrufat noted that Twitter users are less likely than those on Facebook to wall themselves off from outsiders and, with "no imposed algorithm" up until now, they're more likely to hear what Diplocat has to say.

"With Twitter, a non-state actor like Catalonia can punch above its weight," Arrufat said. "Maybe we don't get replies from nation-state actors you know how international relations work. Nation states communicate with nation states, even on Twitter. But we know they're looking at us and there are no intermediaries and no filters."

Twitter isn't just a promotional tool for Diplocat much as it serves as an intelligence-gathering tool for journalists and marketers, it gives the organisation a way to monitor what people are talking about, and to craft its message accordingly for consumption in different countries. "Facebook is useful to generate debate, to get people clicking your links, and Twitter is more to get first-hand information in real time and see what's going on at the moment," Arrufat said.

So what happens if that real-time, unfiltered quality comes under threat?

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A lot depends on how enthusiastically Twitter pushes the changes on its users. As Brown pointed out, if it's easy to opt out of having an algorithmically curated selection of tweets at the top of the feed, or at least to find the raw feed beneath, dedicated users probably won't be put off. However, "drive-by Twitterers" might find themselves missing the contexts of conversations.

And what if unlikely as it seems now Twitter simply ceased to be?

"It would be a big blow to a lot of people who use it as the default platform for participating in debates and raising issues," said Goldstuck. "But having said that, people would probably turn instantly to Facebook, which uses a different format and syntax and language, but people would adapt very fast."

Arrufat concurred that Diplocat would "adapt somehow", even though it doesn't see Facebook as suitable for its purposes. "We will see where the trends go and follow the trends," he said.

"[Twitter has] now become quite important," said Mhlungu. "The sort of things we saw last year, that's the kind of potential it has. Not everybody uses Twitter to organise a mass student movement it's a community of like-minded people, friends, people to learn from. If Twitter did die there would be some significant consequences."

It may be that no-one needs Twitter in the sense that they couldn't go on without it, but it's clear that the service's nature has certainly made it hugely useful to those with something to say, and those wanting to listen without a filter.

Keeping shareholders happy while retaining that utility will be Twitter's defining challenge.

This article originally appeared on sister title Alphr.com