Gmail, Mailchimp, Basecamp, Highrise, LivelyStocks, Twitter, Github, TradingView, Various Google Tools including (Analytics, Adwords, Adsense, Reader)
I guess you could argue that if you have invested in a stock (emotionally and financially) enough to want to see real time info that you should know the symbol but hey I want to check out the app w/o having to google a lot of stuff :D