It extended the record run of rising sales to a 42nd month and brought the number of new registrations for the year so far to 1.6m, with industry officials predicting more growth to come.
It has now raised its original forecast of 185,000 new registrations for 2013 to 190,000.
Update 2: New registrations for GroupTweet are being disabled by the founder "until this is sorted out".
He added: "Following this excellent first half of 2013 we wonder if perhaps we can now look at adjusting our original forecast of 185,000 new registrations for 2013.
But the company will no longer accept new registrations for BackTweets, and eventually the BackType product and API services will be discontinued.
The existing Tagworld site remains as is, although the company is turning off new registrations for now and focusing entirely on Flux.
The city has been trying to crack down on illegal tourist rentals for some time, with the incoming mayor Ada Colau putting a temporary cap on the number of new registrations for rentals last year — a moratorium that was extended this summer.
Backopy, the founder of Black Market Reloaded, had to close new registrations for three days after his traffic increased from around 2,000 new users a day to over 5,000.
In another system, IT staff constructed a new registration process for patients and created a new ordering procedure for NRT within the EHR.
He noted that the pharmaceutical sector was being affected by what it called the "patent cliff" for medicines and that other factors, such as a new registration system for car sales, were playing a part.
