Love it - but the built in domains are useless.
Almost 5 tacos, not quite! But a solid 4 and superb value...
Provided you have a spare domain or don't mind picking one up this is a fantastic link shortner that has some excellent filtering.
Is it as detailed and complex as something like ClickMagik? No - but for the one time price the feature set is superb.
I got the Tier-2 and have added three of my own custom domains and verified them (clear simple instructions are given so even a non-techie should be able to follow it).
I can't give it 5 tacos because of the issue with the built in domains (one gives a warning and the other is starting to get flagged by some security software), but that was inevitable. It only takes one idiot customer to use it to forward to a site with phishing or malware on it and the whole domain gets blacklisted.
Ran an affiliate campaign through it and it's worked like a dream.
So if you intend to use it with the built in domains, you'll be disappointed. If you don't mind pointing a domain or two at this then it's a lovely solution.