I published the blog post [link=http://www.knowyourfiles.com/?p=529]Strip your images, Not yourself[/link] today. This is not strictly about ThumbsPlus, but nevertheless informative for anyone who wants to make sure that photos passed to others are clean of any unwanted metadata.
It includes a link to a handy, dandy little Freeware application called [link=http://www.metabilitysoftware.com/products/filemind-quickfix.html]FileMind QuickFix[/link] that scrubs metadata from JPG files.