Market view could be more structured like bitcoincharts.com, with data for time periods grouped together, not that scattered. Also sparklines (http://en.wikipedia.org/wiki/Sparkline) would be nice, maybe with some indication when dividends have been paid out (vertical line or something?).
On the signup page, "You agree to to GLBSE's Terms of Service" should be linked to the actual TOS imho.
http://dev.glbse.com/info/security is empty
The terms page has a different layout than the rest of the pages in the footer.
In the API (yay!) I miss the ability to send dividends and transfer assets/BTC - also maybe fix afewmissingspaces and speling error's.
Also I'm missing trade and bid/offer histories.
I'm also not sure if it is enough to only have an ID in the get request itself - once anyone sniffs my traffic, they immediately can pull all my precious stuff from GLBSE! Maybe it could be done like on mtgox where your API key is used to sign requests instead of using it in the URL?
Edit: I might be fine with only displaying the contents of my account via a URL-only approach, executing orders is a bit too risky in my opinion though.
