I love PDFs and I favour them over the other document formats and I am pretty sure many of you love then too. There are many things we can do with them apart from just viewing and reading them. Web 2.0 technologies have provided us with some free awesome tools to interact with this document format. We can now annotate, highlight, customize text font, add colours, add hyperlinks and many more, things which were until recently impossible to do on PDFs.
Via Cyndi Danner-Kuhn