Time tracking for projects

Hi! Just another rainy spring day here in Maryland but something potentially very helpful just came across my desk. Keeping track of time spent on multiple projects is difficult and not knowing exactly how much time it takes to complete a project makes it difficult to predict how long the next one or should I say the next similar one may take. Templates and timelines are all good but if they don't stand up consistently across projects, they are really just guidelines. This tool looks easy to use and the best part is it is FREE!! http://www.toggl.com/