Hi Terina
It seems odd that people can do bookmark-style links that access all the functions of stumble upon except the actual stumbling - even the "thumbs up" that lets you feedback...
It is a bit odd, however, I don't have an appreciation for the software mechanics that makes this type of add-on work. Seems to work well in Firefox for me.
I do think "Stumble" is a great way to explore the realm of serendipity and spontaneity.
One suggestion is to send
feedback to Apple suggesting something similar in Safari.