kenn3th SG from Msn plus forum itself http://www.msghelp.net/showthread.php?tid=21598 self explained to be ad-ware from sponsors.
yasusenpai SG i last time tried but got problems with my msn. ended up uninstalling since I don't really require so much functions for a chat messenger. maybe it is good if u wan to steal display picture, play custom games with friends or do some skin change for msn messager.
Y_Shun SG It is safe, but if you accidentally installed the Sponsor Program, don’t attempt to delete the spyware yourself, instead, use the uninstaller which also can remove the sponsor thingy.
ndmmxiaomayi SG Linked to Microsoft? You've got to be kidding. And it's not a safe product if you don't install properly. This is NOT a Microsoft product. It's only an add-on for Microsoft products, specifically the Windows Live Messenger. He has been linked with Microsoft after Microsoft awarded him, but was retracted shortly afterwards because the community was not happy.