> From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of [EMAIL PROTECTED] > Sent: Wednesday, August 02, 2006 11:55 PM > To: Peter Barker > Cc: [email protected] > Subject: Re: [Spambayes] Spam in Images > > > Peter> For my spam and non-spam, a good indicator is that I very seldom > Peter> receive non-spam messages with a .gif image attached (attachments > Peter> are usually .jpg or various document types). And if a wanted mail > Peter> has a .gif attachment it has much more text than the usual > Peter> gibberish in the spam messages (because it is usually just a > Peter> company logo or similar, and not essential to the message). So if > Peter> spambayes can score attachment type and text size it may help. > > True, but for those people with correspondents who do send > them mail with image attachments ("Subject: Cute pictures of > my new granddaughter"), the presence or absence of images may > fall around the middle and thus either not be used at all, or > only provide a negligible bump in one direction or the other.
But Peter's point is that a picture of somebody's granddaughter won't be a GIF image; it will be a JPEG. Digital cameras don't use GIF, and hardly anybody else does either. Except spammers, who presumably care less about image quality than about file size. I suppose the result of scoring GIF images as spam will be that spammers will switch to JPEG. But anything that makes their lives more complicated is all to the good. _______________________________________________ [email protected] http://mail.python.org/mailman/listinfo/spambayes Check the FAQ before asking: http://spambayes.sf.net/faq.html
