I like how easy it is for people in different countries (and time zones) to work together with no hassle at all! It's also very quick, which makes me happy because we don't have much free time these days ;)The fact that you can easily add new users from anywhere really helps.
The only thing i dislike about this software are some of its functions - such as not being able to edit reports or export data directly into Excel/CSV etc., but those issues should be resolved soon since they're already working hard on them :) We use Closer mainly so our customers can see their orders instantly whenever they log onto our website instead of having to wait until next day when an email gets sent out. This has helped us save both money AND TIME by cutting down waiting times of emails getting answered immediately!