> We're trying to make something people want
That's not some kind of magic incantation that gives you the right to do as you please though.
> If it becomes an issue, we'll probably add an option to get Rapportive to coexist with the ads rather than replacing them.
Shouldn't that have been the default?
> Here's a fact: the most popular entry by far in the Google Chrome Extensions gallery - with 1.3 million installs, and 126k more each week - is AdBlock, which hides the Gmail ads.
Adblock does not target a specific site, it hides all the ads.
I'm afraid you're setting precedent here, that by doing this you are opening the doors to it being 'ok' to modifying content in-flight in ways that the creator of that content does not sanction and does not condone, directly targeting the bottom line of one specific site.
I'm sure you're doing it out of a good motivation but I simply can't find myself agreeing with this strategy, especially not when you admit that you have alternatives.
> We don't have any ethical problems with what we're doing,
Apparently :)
> but we understand if you feel software that blocks the ads is wrong
I'm fine with ad blocking in the general case, just can't see why you wouldn't have any ethical issues with this.
Anyway, enough said, I do hope you succeed and I do hope that at some point you might come to see things my way.
If someone pulled a 'rapportive' on you I'd be on your side just as strongly.