First thank you for creating your software. ;) I am still doing some tests with it (I just tested the backup only function) and so far I am pleased because it does not seem to create random duplicates like Google Drive pc client is doing for me and many others (see here: https://productforums.google.com/forum/#!mydiscussions/drive/_ApOopI-Xkw )
Here are some questions/suggestions :
1) You have released your last version on march 2014. If I buy you a copy right now, will I have to pay again when you release the next version ? And do I have to pay every year ?
2) When do you think to release this new version ?
3) suggestion : For only some folders : backup only some kind of files (htm + pdf+ xls etc..)
4) suggestion : Right click on a folder and backup it, not like right now inside the google drive root folder, but inside one desired folder of the online google drive main folder or subfolder
5) suggestion : At the same time : sync only one or more local folder(s) and backup only one or more local folder(s)
6) suggestion : Safety check : is my data really well backup online ?
Check if a local folder is really well already saved online (MD5 hash test for each files) by comparing it with the online one.
If not, shown differences and allow to delete duplicates that are only online.
Thanks in advance ;)