Gone completely from MSN index

[lawyer]

Last night I was number one on msn search for many keywords.
This morning I am gone completely.
This has happened in a matter of hours.
I was inputting keywords to their search engine to check.
I also updated my pages since their last catched page.

Please can someone tell me that they often drop you and then put you back again while updating.

Or have I broken a rule?
If I have how do I know what it is?
It is not right for a website to just vanish after being number one in some searches.
Can someone with more savvy explain to me what it may be considering I have changed pages and updated them.
Does this happen for a time before your site is restored?

Thanks

[jimbeetle]

It's still indexed -- maybe not for long unless you get some original content -- but it's there.

[lawyer]

Thanks for that reply.
I think I accidently blocked msn from my site by mistake using a new software and then realised and unblocked it.
My content is my own original content bar a few articles. That is why it came up number one for popular requests till the other day.
I know it is indexed by name but I meant keyword placement.
My mistake.