Clarity, an expert advice marketplace, publishes startup posts on growth, press, marketing, and remote teams.
HN comments cite it for a post on why women founders matter, when discussing funding data.
It's not a very big pain point. If I want to share links with friends, I tweet at them or send a DM, or use an IM client. So I would only need this app when sending a link to a friend that's not on Twitter or IM, which is like once a week. Not a big enough need to install a bookmarklet.
That said, it does appear pretty well done. I would consider taking the code and pivoting to an adjacent concept - one that you've validated and proved product-market fit.
http://www.ashmaurya.com/2009/11/achievingproductmarketfit/
http://blog.clarity.fm/the-journey-to-product-market-fit/
http://www.slideshare.net/ashmaurya/10-steps-to-productmarket-fit
good luck
There is data on this everywhere. It'd be hard to miss if you looked at even a handful of funding rounds (though the industry is getting better at this). Clarity came up at the top of the Google search: http://blog.clarity.fm/why-women-founders-matter/
It shows 4-9% of VC funding goes to companies with female founders, roughly tracking the percentage of women at top VC firms.
People need evidence to accept this blatant reality of the tech scene, but making assertions about young, attractive women being blindly handed billions of dollars...