If you have a keyword rich domain than you can get on top of msn for that keyword in notime. This is the only advantage of msn as a webmater otherwise it's pretty much useless. Not to mention, you will equally fell down fast for that keyphrase as time passes by
I launched 2 new sites about the same time 2 months ago. Ones been completely indexed by the MSN bot and MSN Search results send me a fair bit of traffic and the other doesn't even show up when you do a search for the actual URL!!! Very poor MSN, very poor...
It is a fact that, for some reason, my sites aren't indexed by msn search quickly / much. And if it gets indexed, only 1 or a few pages show up in the results. MSN Search so far never (!) referred anyone to any of my sites ... I guess that Microsoft has its reasons why they don't put that much emphasis on msn search. Microsoft is making quite a lot of profit, but only thanks to Windows. Suites like office and such don't give any profit to Microsoft. On the other hand; it is a bad thing too: microsoft products everywhere link to msn search ... if newbies start off with internet, they'll go using msn search, which is worser than google of course, as google gives much better results if you search something.
http://search.msn.com/docs/siteowner.aspx?t=SEARCH_WEBMASTER_REF_GettingSiteIndexed.htm To see if your site is listed in our index, you can run queries in MSN Search using the URLs for each of your site’s pages as the search terms. If your site has recently been posted, or you have made changes to your site, it may take several weeks for your updates to appear in MSN Search results. They are aware of it.
It's easy to rank in (typically) and their SERPS are become more and more on topic everyday. Don't count MSN out just yet.
MSN only has 200 pages on my site indexed, Google and Yahoo have 500+. Get barely any searchers from them too. I'd rather spend time on Yahoo/Google (although Yahoo isn't much better...)