Well, I knew about LiveJournal almost since the moment I got internet connection - in winter 2001. But I didn't see a point in such service: really, what would you need that for? Back then I was using internet for school research and finding out all I could about Sailor Moon anime - my love of that time.
Much later in 2006 I found out that my favorite fiction writer Anastasia Parfenova (nastya_tor) has a journal here and I wanted to follow her updates - I read all of her books and wanted to know if she has any more in work. By then I had my own journal on one of Russian sites and didn't see any reason to start another one. Some time later I did register, but only so that I didn't have to leave anonymous comments.
From there it grew. I started to use it to post results of various tests, then stumbled onto cooking and started posted my recipes both there and in my journal. Then I found thequestionclub and there in one of the questions I got into a discussion about differences between living in Russia and USA. Soon I was posting in both my Russian journal and here.