How is this different from a change-alert tool?
Alert tools tell you a page changed. Rivalwire reads the change, shows the lines, sorts new pages by what they are, and ranks videos and stories against that competitor's own history. Then it sends one briefing instead of forty emails.
What counts as "unusual"?
A video is reported when it has at least twice the views that company's other recent videos typically get. A Hacker News story is reported at three times their usual points, and never below thirty. With too little history to know what is usual, nothing is claimed.
Why is my first briefing short?
The first reading of a site records what is already there. Calling all of it new would be wrong, so the first briefing only includes things that carry their own recent date. From the second reading on, anything that was not there before is reported.
Does it need access to any of my accounts?
No. You give it your competitors' domains and an email address for the briefing. It never signs in anywhere as you.
What can't it see?
Pages drawn entirely by JavaScript have no text to compare, and the briefing says so when it meets one. Hacker News stories are found by links to the site, so a thread that only mentions a company by name is missed. YouTube feeds list the latest fifteen videos.
What will it cost?
Pricing is not set. It will be published here before anyone is charged.
When can I use it?
Early access is not open yet, and this page does not take sign-ups. It will say so here when that changes.