Getting Real by 37signals is now free
gettingreal.37signals.com
gettingreal.37signals.com
http://37signals.com/svn/posts/3182-get-your-free-copy-of-ge...
At the time I was working with someone who was an awful writer and communicator. That person was in a VP position that required lots of communication internally and externally. I think 37 Signals are right about writing because good writing requires clear thinking.
Update It's still there: http://gettingreal.37signals.com/toc.php
[I don't use gmail anymore because my e-mail content is also not "free", i.e. I prefer paying 0.90 EUR/month to a smaller Webmail provider without ads and with worse spam filtering over letting Google analyze my personal e-mail for advertising and possibly other purposes - it's a cost I cannot calculate]
Nothing is at zero cost really ... if you have to click a link to download something that "costs" you your time, which is inherently worth something.
I think in this context "free" isn't deceptive at all.
This and "The Pragmatic Programmer" are my top two books, relating to Software Development and Running a small business.