[curstpriest]

The browser is slow. Wifi is faster than 3g. DX doesn't have wifi and 3g is slower anyways, and it's browser is also slower because AZ refuses to update the firmware until K3 sells more models.

Browser also can't follow external links and chokes on content-rich pages.
Hard to navigate some sites.
Not really worth the effort.

Would only use the browser if I was:

1) Stuck in a well and my cellphone was broken, had to send email for help before I died. Would probably wait several minutes before resorting to using kindle browser still.
2) Lost power + internet + cellphone wasn't working so had to use Kindle's internet to look something up.

You have no control over font selection, you can't really control much about the layout or anything.

Margins are set to the maximum.
Text gets cropped midline like in PDFs, very irritating. Text will be cut off midline and unreadable sometimes. When you push page down, you can not see the text line from the previous page.

Also remember that webbrowser is marked experimental, and AZ has the right to revoke its functionality at any time, or abandon support for it all together.