Be honest, I just did a Google search for an image host after noticing I couldn't just attach a photo file here. Found that one (postimage.org) first and admit, know nothing about them...all my fault and my apologies to any offended.
Just a general note - spammers and malware authors are getting depressingly good at manipulating Google results. So sometimes the first one or even two results can lead to bad sites. Doing a quick check with the Linux "whois" tool shows that postimage.com seems to be the real site. Postimage.org has a hidden registration. That is as often as not an indication of something questionable being hosted at the site. If you play with "http://www.dnsstuff.com/" over time you can develop some intuition about "good" vs "bad" sites.