Good question! We're focused on different use-cases (note-taking vs. project management), as well as a narrower niche (technical teams vs. any group of people, teams, families, etc.).

We use both Trello and Memo in our and the usage is quite complementary.

Do you use Trello for note-taking at work?

Consider developing an extension (browser), not sure if this is secure at all, but think how easy it would be to grab current tabs, highlight-get text from pages, etc... I've got this for myself but it sounds relevant to your app.

Again not sure about security though, but convenient. No need to switch to another tab while deep in the rabit hole of opening links.

Totally agree! A browser extension is on our roadmap, if you're interested to get early access to it I can add you to our "beta program".