I like that it's easy to use for my small team of freelancers who work remotely from home or in different countries around Australia - we can all access our tasks at once without needing any special permissions! It would be great if you could have multiple tabs open with your own projects so when one person closes their browser window they don't lose out too much productivity but this isn;t really something i've noticed yet as most people are using just 1 tab per client/project which works fine enough until someone leaves unexpectedly then suddenly there goes half hour lost working time due to having no idea what task was next up (or even where the last file went).
We're currently trying to manage several clients' websites via remote teams and also keep track of invoices etc., plus provide support over email & phone calls during off hours while still keeping some.