Well. That should be a simple decision. Would 'many websites' want/need it, if so would it be enough to generate more ad revenue than you'll loose in subscriptions/customer revenue?
If so than you have a viable business model. If not, than stick to your current 'sell it to them' plan.
Give away, and ad support, things that everyone needs or wants. Charge for niche content. It's the way of the internet, currently.
Really though more info is necessary. For instance if it's a certain type of SaaS you may be able to make a living on paid support without either option, or if it's a cool webapp than perhaps a freemium model should be embraced.
If so than you have a viable business model. If not, than stick to your current 'sell it to them' plan.
Give away, and ad support, things that everyone needs or wants. Charge for niche content. It's the way of the internet, currently.
Really though more info is necessary. For instance if it's a certain type of SaaS you may be able to make a living on paid support without either option, or if it's a cool webapp than perhaps a freemium model should be embraced.