No way, we are not collecting this because we don't need it (and yes, it would be not very private). I probably should improve the phrasing in the Privacy Polic

No way, we are not collecting this because we don't need it (and yes, it would be not very private). I probably should improve the phrasing in the Privacy Policy. Qbserve detects popular apps and sites automatically by matching them to the entries in the bundled database. If it can't find a match, it puts the app/site into "Uncategorized" category. Then when the user decides to assign it to some category, there's a checkbox with text "Submit domain + category" and hint "Send it to developers to improve Qbserve". You can disable this checkbox forever in the app's settings. Then we get somethings like { "host":"ycombinator.com", "category":"news" }, check if this site is really popular and add it to the bundled database in the next update.