Authorship of Hebrews

I suppose you read the same commentary that I did (from Bible tracks) that talked about the authorship of Hebrews.  I don't know enough bible scholarship to make a judgement for myself, but I liked the way that the author of Bibletracks puts it-- that while many debate it because all of Paul's letters have a more personal front end speaking directly to the people with comments on what's going on with them and with him, none of that shows up here.  And While all the other letters are written more personally, this one is more formal sounding.  I also like how that commentator from bible tracks points out that since he is writing to the Hebrews, the style would be intentionally more formal, and there would be less personal tone.