1. Download zipped file - http://galerts.net/pub/ga_updater.zip

2. Extract to c:/ga_updater or any folder

3. Run Google Chrome and install extension.
3.1.

3.2. Switch on Developer mode
3.3. Click Load unpacked

3.4. Select c:/ga_updater or your any folder from p.2

4. Open in new tab http://galerts.net and login.

5. Open GA_Updater' popup tab.

6. GA_Updater should found your user code from galerts.net

7. Click Start.

Now, GA_Updater check leboncoin.fr by your links on galerts.net.