It shows all the new posts and what not so you can keep an eye on who is posting where.
On Topic: I Think this will be good for like PM notifications since a lot of people duel with out duel mode. You can see if the item is sent quicker, or if someone wants to get a hold of you and your busy ingame.
I don't know I feel like it would be really annoying for marketeers, but I guess you would be able to set it as an option. Although I do not see it to be necessary, toribash has way more important improvements to make.
Like say at the bottom of the screen in-game could be where it is located. Simply notifying you while you are in-game that you have a message on the forum.
What about in-game push notifications. I'm not sure how difficult this may be or if anybody has came up with it. I know a lot of you may be PMing someone any play in-game while you wait for a response. So I thought it may be a good idea to add something that pops up either in chat or something of that sort.
This would help a lot of those who multitask between forums and in-game. Please let me know what you think about this and feel free to ask questions about this. Questions may help develops the idea into a more understandable and reasonable idea if you don't think it is already.