It's really annoying and it's a """feature""" that should be togglable, not forced.

This is pretty much making me hate opera more and more, i use rss allot, and this "feature" (more like drawback and hassle '''feature''') is crappy, and annoying, this one thing is making me start to go back to firefox.

If internet explorer can let you do it, and firefox, then Opera should too
Example: http://www.jaysmith.us/post/Turn-Off-Feed-Read-Preview-to-Show-XML-in-Internet-Explorer.aspx