First off, THANKS FOR AN AWESOME TOOL. I use it all the time (except when we were planning to meet at the Spotted Pig, and I took the red train when I clearly should have taken a blue one).
The borough limitation that JP mentions above is a little annoying, but there are two workarounds I’ve found for this:
* Highlight the street address (even though it’s in another borough) and activate the bookmarklet. A few seconds later, you’ll be greeted by a friendly page on hopstop saying they can’t find your destination address. They give you an opportunity to select a different borough right there on the page. Presto, you’ve got directions.
OR
* Just don’t leave the island