I think it would be great if you can fix these:

1. Configure my showing items per page in ma setting. (Forever)
2. Delete or modify my shared and posted bookmark.
3. Contact my member in da list. ( entertaining during researching )
4. Can Highlight, Bookmark & add sticky note at the same time with ma Right click in any pages.
5. Sign-In directly without second click of the sign-in button in the web page again. ( This can confuse many people, they start to create their account again and again).
6. Screen Resolution for options. (800x600 is not gonna see the options page correctly)

7. This is major problem that can cause to uninstall Diigo Toolbar. For example, if i don like some site, i can use Diigo highlight or comment,etc. on that page to make it look messy, and other people can see it on that page if they installed Diigo toolbar on their PC. Therefore, it can makes them feel strange and they may try remove Diigo tool bar from their PC. Not only this, while everyone can put on every page, the page owner may not feel good too.

OK That's wat i got and I will tell you more.

Jeff