I remember going to 4399 for games when I was an elementary student. Part of the reason why numbers are so pervasive, in the 51job.com sense, is that if you we

I remember going to 4399 for games when I was an elementary student. Part of the reason why numbers are so pervasive, in the 51job.com sense, is that if you were to type out the pinyin for "i want a job" in Chinese... the url would be insanely long and unwieldy. 51job.com is easy to type and remember (also they have a billion ads everywhere). This means if you dont have numbers, you will try to use the initials for all the pinyins in your name. Jing Dong becomes jd.com 4008-517-517.com for McDonald's delivery is from their delivery phone number, which they had years before the URL. You would hear 4008 517 517 with a jingle on the radio all the time. The last time I heard it was probably 10 years ago but funny how the tune of these oft-heard ad jingles never fully leave your consciousness.