The most important thing I like about this wiki is that it allows me to create my own pages without any coding knowledge, which makes editing very easy! It also has an option of adding images or other documents in your page as well so you can easily share them with others too. Sometimes when i am trying to edit one of the existing pages then suddenly everything gets deleted from where we are working together (in team). So if anyone else tries to open same document at once time than he/she will get error message saying "Could not load file". If there was no such feature available earlier then definitely perfectwiki should be included because its really helpful tool for all those who don't know how to code. We use perfectwikis mainly to write content related articles but sometimes i need to add some pictures etc., using which people outside our office could understand.