I just noticed that some of the achievements are insane. For example, go on 100,000 dates, or click for 1 BILLION hearts. As far as I know, you must manually go on each date and click for hearts. My goodness.
Runescape began in 2001. World of Warcraft began in 2004. Runescape was free. World of Warcraft cost a lot of money. I don't know about now, but in 2004 I definitely took Runescape over World of Warcraft.