frame-set's or one frame via SSI/templates ?

[Jakob Ramskov]

What is most popular use out there on the big wide internet, when using web applications (and dynamic content).   To use html frames or to only have one frame (that is assembled via. SSI/templates).   I see plus and minus for both. frames are complicated, and it's hard to tell which frame to display server responses in, since server has no clue of the frames. one frame on the other hand causes the entire browser canvas to reload for every request, and that may be rough on the bandwidth? or is caching still possible with that solution?   Hope to hear about what you've used.   - Jakob