Despite those reports, Facebook is denying knowledge of any kind of formal relationship with the startup. A Facebook spokesperson has gone on the record as saying the company is "not aware of any details about RockMelt and its product."

5. RockMelt may have its own URL shortener.

RockMelt has registered the domain me.lt as a URL shortener, ReadWriteWeb's Kirkpatrick claims. He says the domain was referenced on the RockMelt home page up until early this week.

According to DNS records, the was registered on April 16 of this year under the name "Klute-Thiemann Informationstechnologie GmbH & Co. KG." As of now, it points to a generic server landing page.

6. RockMelt's team is staying decidedly quiet.