Chrome, to my knowledge, does not ‘yet’ support reading DJVU files. I have looked up and down for a plugin without any success. If you are using Chrome on this site this deficiency will make reading documents difficult. Should you know of a way to read DJVU files in Chrome please share that with us either via comment or using our contact page.
On another note, you may have noticed that I replaced the Tweet/retweet function on this site. The previous Tweet plugin stopped working in Firefox after a software upgrade. Hopefully the new Tweet plugin will continue to work.