I'd never played a text adventure game before this one, but since playing it I've become somewhat hooked on them.
I got involved by following a tweet while I was at work. Luckily it was the week leading up to Christmas, so it didn't matter too much that a vague sense of intrigue led to hours and hours over the next few days trying to solve it. Like I said, hooked!
The wit and humour within the game itself made me smile a lot. The level of difficulty struck a good balance between solvable (when you REALLY put your mind to it) and frustrating - I found it to be that kind of addictive frustration that keeps you coming back. It was only once I'd sketched out several maps, possibilities and decision trees in a notepad that I realised how immersed I'd become in the game's World.
Once you get into the swing of it the advice "do what you would do in real life" gets you a long way. I warn you now, the rushes of satisfaction that come with getting over a new hurdle become addictive. Make sure you've got some time set aside over the course of a few days in order to solve it, or your productivity at work is going to seriously dip!
A really enjoyable game.