I had twitter in mind, when I was writing this. Tweetdeck has this feature, where you can "clear" the column and it just drops all it's content, and only new content from that point appears.

At the time I was trying your tool, I had all the items from the OPML and twitter I've imported already read, you cannot just mark all the iteams as read.

There is no way to distinquish what I've read and what not. I expect the reader to remember what I've read and not bother me with them again. I don't wanna read anything twice and think "have I ready this? where have I ended" ... to solve this is exactly the reason I use readers, but your social integration is not doing it for me. Or have I overlooked something? The twitter is just reading.. I want it to remember where I've been last time and pick up from there.

I like the idea of "one dashboard" very much. But the homepage dasboard is unsable, because you cannot remove from it the items you've already read. Adding a "only unread" and "all items" options, just like you have on the reader tab, would work great for me.

Spacebar scolling down the page is browser default, that's not your feature :)
I know I can use J and K for navigating, but the spacebar is much more easily accessible when you're not looking on the keyboard. You can reach it very quickly by touch and don't have to verify that you're on the right button.
It also eases the transition from competition tools.

Hi, that's not an answer. I'm looking at the badge "ANSWER" at your post and thinking: shouldn't the user that asks the question decide if was answered properly? :)

I was talking about the homepage, meaning the "Home" link in the menu.