I remember the first time someone sent me an infographic if about office design trends. It was pretty neat so I posted it.<p>After a while it became clear that people were just rehashing 5 data points about something marginally related to my site, but 100% related to the keywords they were link building for. Plus most of the time, the information would probably have been better presented as 5 bullet points of text with real links to the sources.<p>The same is basically true of guest posting - it was probably once an interesting way to do get a different voice on your site or build a portfolio of writing, but now all it is is a link building scheme which is why I immediately trash them.