Not always. You can use a 1px image, re-sized on the client using CSS to any arbitrary size, as the basis for an image map so that various areas and polygon-sized regions on the page become clickable. Far more efficient than transmitting a full size image over the wire.
-- Ron Newman, Founder MyIdeatree.com <http://www.ideatree.us/> The World Happiness Meter <http://worldhappinessmeter.com/> On Fri, Mar 22, 2013 at 1:12 PM, Gillian Densmore <[email protected]>wrote: > Shouldn't be there for formating reasons CSS javascript and PHP should > handle placement of elements on a page just fine without the need of a 1px > big item. > > On Fri, Mar 22, 2013 at 10:22 AM, Owen Densmore <[email protected]>wrote: > >> Yesterday, I noticed in the middle of the "You just went to the Google >> homepage" conversation, my GMail "accept this image" banner was on, but >> I could see no image! >> >> WTF? >> >> So I look at the raw source, and indeed, this appears: >> >> https://app.yesware.com/t/ac60524099a2c2922efb3fea7fcd30ecf03a1=482/5bb54418d45ddd9646340c46dfba6e56/spacer.gif >> >> .. which when downloaded was a single pixel, invisible due to alpha=0 and >> possibly being white. >> >> This seems to be a way of knowing when the mail was opened, the >> yesware.com site can collect statistics on the image being displayed. >> >> Is anyone doing this on purpose? Or have you caught a malware in your >> mail client that is looking at your usage? Or is it simply part of an >> obscure formatting stunt? >> >> BTW: This then appeared in all the rest of the conversation which >> included the initial email. >> >> -- Owen >> >> ============================================================ >> FRIAM Applied Complexity Group listserv >> Meets Fridays 9a-11:30 at cafe at St. John's College >> to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> > > > ============================================================ > FRIAM Applied Complexity Group listserv > Meets Fridays 9a-11:30 at cafe at St. John's College > to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >
============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
