Thanks to riot for taking the time to verify this. We are currently working on a new site, including forums, replay sharing etc.
Originally Posted by Tamat
Our engineers spent some time diagnosing the program and didn't find anything that made us suspect there is anything malicious living within. That said, like with anything developed by a 3rd party for the League of Legends community, please use at your own risk.
As Riot has now tested and verified that this program is ok to use (at your own risk) we have started a new thread.