De-indexed by MSN?

[Aquarel]

Greetings!

Recently I had a few problems with a few sites I just start to handle (all on same IP):
www.[dot]pmoz[dot]org
www[dot]pro-board[dot]com
www[dot]jdhealthcare[dot]com
Recently they got de-indexed by MSN, for a reason that remains wierd to me. Even more a few other sites that linked to these ones (located on different IPs) received a penalty (drop in SERPS).

Do you have any idea why this happend - as far as I know the sites are legitim and no black hat seo is used.

Please let me know if you notice anything that may result in this MSN ban / penalty.

Thank you in advance.

[Menard]

What strikes me as odd is that when I did a search on MSN, JD Healthcare was the only one indexed. From a personal perspective (and mind you, just my personal opinion) if I were running a search engine and exercised a personal choice of who to list and who not to list, the JD Healthcare site would be the first one I would drop.

Keep in mind that I am personally favorable of anybody who gives the AMA a well deserved kick in the nads and gives allopaths some well overdue whacks in the head, but not if I have no idea who they are. The site frankly comes off as an overextended spam email put into a site. If the focus is truly on the prospective patient then why is there so much adsense all over the site? The site frankly smells of a scam to me; and it may well be completely legitimate, but don't ask me to take the word of a complete stranger on that. Whether it is legitimate or not, with some of the crackdown on online pharmaceuticals in the US (the republicans who own stock in the pharmaceutical houses can't have anybody cutting into their profits), and being that MSN is a US based company, it may well be taking a hit due to that (but that is a shot in the dark).

I don't know about the PMOZ or Pro-Board sites except to say that the urls are deceptively close to already established sites. I wouldn't think that this would negatively affect them, but who knows.

I do have a question about PMOZ. If it is a free directory and search engine, then where is the free submission?