I have seen items with less +'s than that on the front page, I think it happens when a mod recognizes a deal as a super one or maybe it automatically happens after an extra high number of clicks register in a very short period of time?
In each case it ended up being a top deal for the day, I just wish I could remember the exact ones to show you an example!
dealwagger (rep: 10.3k) posted Nov 29, 2012
9 days ago
Feb 20, 2016
Mar 18, 2016
Mar 27, 2016
20 days ago
28 days ago