[aderaynal]

I don't really want to perform add/drop transaction in the add-on. The main reason is that I don't want yahoo (or others) to complain that I am taking page views from them. Giving the user the chance to review the transaction is also a plus.

[ironblunt]

Has Yahoo actually complained? I heard that they were opening an API for their fantasy sports products.

[aderaynal]

No complaints from anyone yet. but better safe than sorry. Yes the Yahoo APIs are coming soon, but it will be a long time until the other game providers follow...