He said that many of the details (placement, frequency, permanence, etc.)

are subject to change, depending on the data.

However, other users, like@shaunfidler, point out that placing ads in conversations could be disruptive.

Two friends victim of “photo bombing” taking a selfie

LeoPatrizi / Getty Images

The advertising test already has begun globally for iOS and Android users.

If you’ve been included in the test, you should start seeing miscellaneous ads in tweet conversations.