Yeah it probaly depends what you're using it for. I used it recently to sneak a closer look at a fantastic house I spotted in a local street that was actually designed by a well-known architect in the 1930s. You can twiddle the image round and get a look at it from all angles, which you can't really do on Google Maps. Great if you're a nosy parker. Also there's a ruler tool, so you can measure exact distances which helped me get my pacing right over 100m. Probably not much use to you.
I'm wondering how @bingbabe got on in the London Marathon. I'll look back over your recent posts. I'm just back from a week on the Isle of Rum with no internet.