In Joomla 1.0, Front End authors had the feature that they could edit their own content articles. This meant they could submit content, get it published and then go back and edit if needed. This was great for organizations like schools who might have each teacher maintain their own page (for example).
It seemed that this feature had been lost in 1.5. I had tested as far as RC 4 and Authors could not edit their own articles. This was a shame as it was a crude form of ACL.
Playing around with 1.5.3, it seems that this feature of Authors has found its way back in somewhere along the way. This is great news as it was a feature I found myself getting clients to use alot.
Go Joomla 1.5!