Yesterday I posted that the Architects Twitter League had reached a massive 630 members, and now we have a pretty good sample I thought it was worth doing some statistical analysis.
The massive growth of twitter in the last year seems to have been reflected, if somewhat belatedly, by a rush of architects, practices and students joining the social networking site to share information, at least in terms of the people who have found the Architects League.
So I’ve taken the data I have about the members of the twitterleague and analysed it with the help of Rob Annable (@eversion on twitter) and a host of other friends who took some time out last night to fill in the gaps in my understanding of spreadsheet function.
The graph above shows the number of members of the Architects Twitter League arranged by the date they signed up to twitter. The earliest joiner is Rob who joined on 6 December 2006.
Plotting this data shows the huge rush to join twitter in the spring of 2009, culminating in 85 members of this user group joining in April 2009.
What’s even more interesting though, is how the number of architects joining since April has dropped off dramatically, with only 9 in August and 7 in September. What does this mean?
We’ve had a look for some comparable surveys of the whole twitter user base and found two recent studies both reported on the news site Mashable.com –
STATS: Has Twitter’s Growth Peaked? On 25 September 2009
STATS: Facebook and Twitter’s Growth Flattens on 13 October 2009 (yesterday).
Both studies use different metrics – the first looks at the market share of US visits to twitter, and the second at number of unique visitors to twitter, but they both show a halt to growth. Neither of them shows a falling off the cliff in quite the same way as our graph though.
The question is – why are there fewer architects signing up to twitter since the Summer? What do you think?