inherited a site - how do I check for blacklisting..

I redesigned a site recently (schooloftheworld.org). While cleaning up the server, I found all sorts of bad pages and relics of seo gone wrong. Its all gone now.. but I am wondering if there is any way to check if the engines have a grudge against the site.

It seems that yahoo has reindexed the site while google has a disgraceful listing of older results that havent resolved for over a month.

I am in the process of using gSiteCrawler to make me a sitemap.. and I am going to submit it of course...