When developing applications

[eluser]Michael Wales[/eluser]
If you were to distribute it - yes, I would include the CodeIgniter framework in the download as well. Sure - there will be some files that are useless, but the entire framework only ways in around 852kb. You're probably only going to get that down to 700 or so by removing the files you don't use.

Factor in the time it takes you to track down those files you aren't using and remove them - well, you probably just lost $300 or so in time alone.