I agree with a number of people out here. ~$160 USD/year for a monitoring solution is nothing and the thought of having to manually build chart templates in Cacti/MRTG sounds stupid. Sure, tons of people can do it, but it is just a matter of time for us. We'd much rather pay a little to have tools work out of the gate and not have to spend my time or our staff's time trying to program something to work. That's what Adam is for. :-) Open source is a wonderful thing, but it isn't always "free". I don't know about everyone else, but my time definitely counts for something.
For some of the criticisms of Observium, I agree. We too use APC UPS, as an example, and the runtime and battery % is a must for us that is lacking at the moment. Honestly, Observium is just young at the moment and still developing, so it is A.) naive to expect Adam & team to be able to support everything out of the gate B.) expect it to be free. While I'd love to be able to switch over to 100% Observium, we can't quite yet but are anxiously waiting for Observium to catch up.
Money always talks, just like in the Kickstarter campaign, and I for one would readily support some type of bounty/mini-kickstarter for aspects people feel are missing. Using that APC example, I'd pay (or chip in some money) to have the full MIB support so we can see runtime and battery %. Of if you need a full Cisco SLA implementation, pay for it yourself and get a group of people together that need it. Of if you have something in your environment, expose it to the Observium team over VPN or https or something and let them test against it, if it is something they ulimately want to have in their product.
Adam, keep up the good work.