When it comes to polling it seems Pollster.com does a great job in graphing all the polls together and finding an average mid line if you will between them all to give a decent view of public opinion on a number of different items.
As far as their analysis page and other links at Pollster.com Avoid the Bias has nothing to say about them but as concerning the polling graphs has found them to be a very fair way of reviewing all the polls and finding a fair and unbiased public opinion trend by including all polls.
Below is a video on how to use their interactive charts and an example of a recently embedded poll chart.
Pollster.com's Interactive Poll Charts from Mark Blumenthal on Vimeo.


