listhings.comListhings.com is a new Estonian “eco-friendly” online web tool for storing sticky notes about anything from To-Do lists to grocery lists and phone numbers.

The man behind the project is Martin Tajur, also Creative Director and co-founder of United Dogs and Cats (see our previous coverage). Martin has also worked as a graphical and user experience designer at Skype.

Martin told us that the service has gathered a bit over thousand registered users since the beginning of the public sign-up period in mid-September 2009, in about one and a half months. He also continued that the amount of registered users seems to double in about a month’s time, or even faster. It is also possible to use the service without signing up, and apparently many do. Just this week Listhings passed 100,000 saved notes.

Listhings screenshotAccording to Martin, the service started from a hobby project. He has been developing the service gradually, responding also to user feedback. Martin also emphasizes that Listhings is hosted in a 100% carbon neutral way, meaning that for all energy consumed to keep Listhings’ servers running, Emission Reduction Credits are purchased. Thus the tagline “store notes, save trees”.

The look and feel of the service is really nice. One can start creating notes right away and writing, resizing, changing color, and moving the notes around all work smoothly. It is also possible to create multiple canvases to get more space and add categorization for your notes. There aren’t too many features for now, but just enough to efficiently do the trick.

There is a lot of potential in the service, and Listhings could a be great tool for creating and keeping track of notes at daily work, also on multiple computers.  But to really unleash its potential and to consider giving up a physical notebook, a mobile app or access is clearly needed. Luckily, Martin has already indicated that an iPhone synchronization app is on the way and available soon.