I'm really enjoying Dragon age, and I'm tempted to buy the Warden's Keep DLC but i'm worried it's not worth the money they are charging for it. Has anyone here played it and if so care to share any impressions or opinions of value? thanks

I don't know how much they're charging for it, I got warden's keep with the version of the game I bought on steam. 
 
As far as pure game content goes, I'd estimate it's about an hour, maybe two hours of content.  The quest storyline is one of my favorites in the entire game.  The rewards in terms of loot are quite nice as well.  I don't know for certain but I believe this includes the super man random event which rewards you with a very nice 1h or 2h sword if you bring it to the weapon smith outside of the keep after you complete its quests.  
 
If you've got a console version I'd say it's worth the money, if you have the pc version it may not be as eventually people are going t o figure out the toolset and produce quality content that won't hit your pocket book.

It only costs about $7 if i remember correctly. So I say it's worth it.

Story/Quest wise it's short and sweet, no more than an hour i'd say. The story is pretty interesting though, as is the case with most of the quests in the game anyway.
 
The true value comes from the content it adds. My character got a new specialization (may be another one to choose from if you follow different dialogue options), a set of plate armor, and a 1h sword from the meteorite event mentioned by Teran above. The sword and armor lasted my character for the remainder of the game (Character was a Tank-specced warrior). There are also 2 new merchants, and the bottomless group chest is very handy.
 
I would say that it's worth the price.

The chest is worth the 7 bucks by itself

I'll tell you what I think... for only $7.

"I think that the DLC is (buy downloadable content)"

" Story/Quest wise it's short and sweet, no more than an hour i'd say. The story is pretty interesting though, as is the case with most of the quests in the game anyway.  The true value comes from the content it adds. My character got a new specialization (may be another one to choose from if you follow different dialogue options), a set of plate armor, and a 1h sword from the meteorite event mentioned by Teran above. The sword and armor lasted my character for the remainder of the game (Character was a Tank-specced warrior). There are also 2 new merchants, and the bottomless group chest is very handy.  I would say that it's worth the price. "

I'd say it was worth it. Nice items, nice story, and after the quest you get a storage chest and a couple of good merchants. 
 
I just wish the chest was in your camp, rather than needing to travel up to the keep, but hey, now I'm just being greedy :)

Definately worth it. I really enjoyed the quest. One of the best in the game.

 
I thought the dlc was well worth the $7.00 bucks. The campaign was interesting and of course you get the specialization the merchants and the storage.

I bought it the day I bought the game, but I still haven't tried it. But it was only like 500 microsoft points.

In terms of $ for game, no, I don't think it was worth it.  However, they load the back-end with lots of good-looking, high stat loot, and when they do it like that it's hard to come away feeling cheated.  I dunno, I guess I automatically think NW2 whenever I see "stronghold" in an RPG anymore.

Worth it, although "The Stone Prisoner" made the biggest impact on my first playthrough. Something I left out brought me back to Warden's Keep in my second playthrough, and it seems to be an overall far-better deal than The Stone Prisoner.