A staggering 93% of people who get broadband currently pick BT over other providers, many of them attracted by the free BT Sport - but they could be missing a trick by not fully weighing up all their options before signing up...
BT broadband is attracting almost double the number of new customers it normally does, as tens of thousands of households sign up to take advantage of free BT Sport.
In fact, a whopping 93% of all UK homes that signed a new broadband contract between July and September chose BT over any of its rivals - many of them drawn in by the offer of being able to watch BT Sport, which launched back in August, at no extra cost.
The three TV sports channels - BT Sport 1, BT Sport 2 and ESPN - are free with all BT broadband and phone packages, to either stream online, via BT's website or the BT Sport mobile app, or watch on TV if they have a YouView or Vision+ set-top box.
It also applies to existing BT broadband customers who sign a new 12-month contract.
Between the start of July and the end of September, 156,000 new customers signed up to a BT broadband package. That's pretty much double the 81,000 that joined in the same three-month period a year earlier - and it's all thanks to the BT Sport deal.
Gavin Patterson, BT's chief executive, said: "BT Sport has made a confident start. More than two million of our customers are signed up to it and our wholesale contract with Virgin Media means it's available to around four million homes in total."
Virgin Media customers get BT Sport free with Virgin's most expensive XL TV package, which also includes Sky Sports 1, 2 3 and 4, as well as Sky Sports F1 and Sky Sports News.
BT Sport is also available at no extra cost to Sky TV customers, but they'll still need BT broadband, which makes Virgin Media the only place to get free BT Sport without being a BT customer.
However, customers who don't have XL TV, and who don't want to upgrade from their current Virgin Media package, will have to pay an extra £15 extra per month.
With all these different options, it's a wonder so many people are choosing BT. It's understandable because people will naturally associate BT Sport with BT broadband, but it's likely some of those new BT customers could've found a better deal elsewhere.
For example, Plusnet customers get BT Sport for just £5.99 per month if they have a Sky box and satellite dish. In some cases, this would be cheaper than BT broadband with BT Sport thrown in - proof that it's always worth shopping around before signing up.