Since I and my nearly 6 yo daughter lives with my parents (financial crap, I work full time but can't afford a place of my own, not that it would work anyway since I work nights, which even pays better than most other jobs) my mother of course always knows when it's my birthday.
But apart from that, the only thing that's happened on my birthday the last few years are the few f*****g facebook greetings, before that it was an occasional sms if I somehow had made it known that it was my birthday, and even when I HAD two friends neither did anything special for my birthday, unless it fell on a friday or saturday and we went out, as we occasionally did on those days...
No, the last 10-15 years I've spent my birthdays alone.
Alone and watching a video, crying 15-10 years ago.
Alone, drunk on beer, watching a dvd, 10-5 years ago.
The last 5 years or so I've made it a point to stock up on beer, dvd's, new games for the 'box and a bottle of sparkly.
I enjoy myself more, mostly because I no longer expect someone to magically appear at my door and take me away to a surprise birthday party.
I still usually end up crying at some point, though.