There are several reasons you should read this article: (a) if you aren’t a programmer to give yourself a headache and (b) if you are a programmer to better understand how your language handles typing and why.
Personally, I don’t trust Google to provide ongoing support and innovation on their products, so if something equally effective is available and I’m not already deeply invested in a Google product, I use the alternative instead. I haven’t used Blogger in years – I kind of thought Google had let it go to the wayside. Maybe it still has – but this is a good development. Still, IMHO, use WordPress – forget Blogger.
This is more to say that I think this is a bad idea. I’m not sure why you would want to create a browser rather than making an extension for a browser. It significantly increases the amount of code they have to write. Further, I don’t see a service like this really making much difference for consumers. If you like this sort of think check out eBates instead.