A couple of comments.. more to come..
- when you create an adspace and you type in the webpage where its going you need to type in "/webpage.html" not "webpage.html". It should add the "/" in automatically..
- please don't use iframes to show the code :-(
- alternative ad options so if you have no one bidding on your website (a reason for no iframes)
- Statistics - Data column(s) for axis #0 cannot be of type string (I presume when someone has no data and you look at their stats)
- no gif's please or people will make horrible animated gifs (or do you check them if they are?)
- no forgot password.. I presume you are storing passwords in one way encrypted format only..
Why no forgot passwords? I would think that its an essential feature and it should be in place soon. Also make sure that its in an one-way hash, preferable sha256.
Bcrypt is the best choice since unlike most hashing algorithms, it's designed to be slow enough to make brute-forcing ineffective.
Also, there doesn't appear to be an option to create an ad unit with the size of 125x125, which is what I've used with BitBin. Or is it ok if I resize the ad iframe manually?