Testing codecogs at Posterous and Blogger

<a href="http://www.codecogs.com/eqnedit.php?latex=y=\sum_{i=0}^{n}a_{i}x^{i}" target="_blank"><img src="http://latex.codecogs.com/gif.latex?y=\sum_{i=0}^{n}a_{i}x^{i}" title="y=\sum_{i=0}^{n}a_{i}x^{i}" /></a>