I found references to these sites on Twitter this morning, from a reputable source. Check them out.
Link Scanner
http://linkscanner.explabs.com/linkscanner/default.aspx
If you’d rather be safe than sorry, enter the URL of the site or web page you want to visit in the box below. Our free LinkScanner Online service will visit the URL in a controlled environment on our servers. Online Web Safety Scan will inspect it in real-time for whether it is hiding any exploit code and, if so, what exploit.
Use Web Safety Scan Online to inspect:
* Links forwarded by friends
* Web sites displayed on search results
* Any link with suspicious characters or web site you have never visited.
URL Analysis
http://finjan.com/Content.aspx?id=574
This tool inspects the returned content of the submitted URL only; subsequent URLs or additional content references will not be inspected.
Monitor your site for malware attacks
Have your site regularly checked against blacklists and scanned for malware.
