Try to resize as very big and very small window the following popular sites:
http://www.blender.org/
http://www.mozilla.org/en-US/
http://www.bostonglobe.com
http://ca.gov
http://wordpress.com
http://gawker.com
http://www.examiner.com
http://www.whitepages.com
http://www.wunderground.com
http://techcrunch.com
http://www.taboola.com
http://www.hubspot.com
http://www.google.com/doubleclick
http://www.domaintools.com
http://adultfriendfinder.com
http://www.engadget.com
http://www.zazzle.com
http://www.sbnation.com
http://www.starbucks.com
To me, it works ok. I vote for one responsible version. Mobile version's it is so 90's wap.
We made tubecamgirl.com autoresizing from launch in early 2011 before this way to design it was called "responsive", in fact it is not perfectly responsive (for today's standards), but the idea it was the same: one version, resizes ok in whatever display or phones.