Ask HN: Any Examples of SaaS Companies Adding Products?

I always love the feedback in HN and thought of a good topic for discussion.

I am part of a startup that has been doing very well since 2007 and we are close to touching $2m in annual revenue. We are in a great position to explode next year and we are preparing now.

We will continue expanding our current product but are now starting to think about adding products for 2013/14 to maintain our growth.

Does anyone have any examples (successes and failures) of SaaS companies adding products? We see several opportunities but I would love to learn from others to compare our focus!

Thanks! Steve