has freerolls for "beginners" (meaning you have access to them until your account is 90 days old). They have like 4/day and you can play so many in the span of a week or something I think it is....both holdem and omaha (2 of each/day) 25$ freeroll's pay top 5 and the fields are relatively small. Only played a couple myself as don't go on there much, but uber soft freerolls.
Titan (http://www.cardschat.com/titan-poker.php) also has a similar freeroll setup for beginners (new accounts < 90 days old), or at least they did last time i was on there which was shortly after my 90 days was up well over a year ago now.
Betonline (http://www.cardschat.com/sites/betonline-poker.php), fullflush (http://www.cardschat.com/sites/fullflush.php) are also a couple of sites with a number of freerolls running throughout the day.
ACR (http://www.cardschat.com/sites/americascardroom.php)/BCP (http://www.cardschat.com/sites/blackchip.php) have 10$ on demand freerolls kicking off around the clock ft gets paid usually get around 6-700 people and there is a weekly lb for them where you could get tickets to big tournies etc.
FTP (http://www.cardschat.com/full-tilt-poker.php) also has the round1/2 weekly type freerolls but not as lucrative as they once were, but they do run daily beginner freerolls, and edge freerolls.
And of course as bigjamo said cc hosts the best freerolls once qualified. They also have a fullflush freeroll which you gain access to just by signing up via our/their link (http://www.cardschat.com/sites/fullflush.php) (http://www.cardschat.com/sites/fullflush.php). With only 25+ quality posts you can gain access to the cardschat 888 (http://www.cardschat.com/888-poker.php) freeroll.
I probably have most of them above but you can find all the here (http://www.cardschat.com/announcement.php?f=13) as there are many others I havn't mention above as I havn't yet given them a try or if I have they don't offer much in the way of freerolls etc that I found of value.