Looking for some constructive criticism on rejected images

[ericvision]

I have posted a gallery of images that have been rejected by a well-known stock photograph agency. I accept that they may not be everyone's cup of tea, and that at least two of them are not technically very good. But some of them are, in my opinion at least, just as good as many of the images the agency did accept. I'm not particularly bothered about them being refused - selling images is not why I take photographs - but I am annoyed that the agency rejects them without saying what's wrong with them. Hopefully, here's where you come in - be brutal: it's the only way I can improve.

http://www.pbase.com/lusobrandane/rejected

Thank you.