I thought it might be useful to start a thread that explained the folder names that certain apps create on your SD card. Usually the internal \sdcard\ in the case of the SGS2 is where apps start from, so comments here refer to \sdcard\ unless noted.
Some folder names are completely obvious, while some are obscure. Inevitably when you remove the app they do not delete the folders that they create. Some are safe to delete some are not. Some maybe obvious to some (eg. DCIM) but not others judging by some comments I have read in the forums.
Please add others or correct as you see fit.My hope is that the list will grow, so eventually we can search for the obscure folder name and find it here.
.estrong - hidden temp/cache created by ES File Explorer, the great free app that I use.
.ngmoco - hidden temp cache created by sumsung game hub.
Android/data/com.cooliris.media/* -cache files created by the standard Gallery media display app developed by CoolIris.
Android/data/com.myboyfriendisageek.gotya/* - this is where the app Gotya store silent pictures that it takes of whoever incorrectly tries to unlock your phone, before it sends them via email with location.
Android/data/com.shazam.android - this is where the free version of Shazam stores the advertisements that it displays.
clusb - the folder that Companion Link / Deja Office creates and stores the synch logging and cache files.
com.zinio.samsung.android app created by Zinio the Magazine app in Samsung Readers Hub. You may want to consider backing up all these sub-folders if you have purchased / downloaded magazines because this is where they are stored.
data/beautifulwidgets - of course cache created by Beautiful widgets.
data/bump_detector - cache created by the app Bump
DCIM/Camera - where the standard Camera app stores photos and video if you have selected to storage setting as "Phone" otherwise they are stored in external_sd/DCIM/Camera. Suggest you back this one up. Note I have not yet found a way for the gallery app to tell you the location of the files you are looking at!
gameloft - any games down loaded from Gameloft in the Samsung Game Hub. Worth backing up if you don't want to down load again or you want to return to saved game positions etc.
jiwire - cache files used by Wifi Finder and variants developed by Jiwire.
Kobo - again created by Kobo from Samsung Readers Hub. You may consider backing up at least the contents of Kobo\epubs as these are the books you have downloaded /purchased.
LOST.DIR created by the Android System to store file fragements or corrupted data it finds on the card. If you have files in here then it's time to mount the phone/card on the desktop and run error checking diagnostics on it. After that you can pretty much delete everything in this folder because your chances of piecing them back together are nil.
openfeint game files published by OpenFeint such as Mortal Skies. May want to back up this folder tree to save down loading again.
thaicomcenter is created by the excellent Tswipe keyboard app.
That will do for starters...
Some folder names are completely obvious, while some are obscure. Inevitably when you remove the app they do not delete the folders that they create. Some are safe to delete some are not. Some maybe obvious to some (eg. DCIM) but not others judging by some comments I have read in the forums.
Please add others or correct as you see fit.My hope is that the list will grow, so eventually we can search for the obscure folder name and find it here.
.estrong - hidden temp/cache created by ES File Explorer, the great free app that I use.
.ngmoco - hidden temp cache created by sumsung game hub.
Android/data/com.cooliris.media/* -cache files created by the standard Gallery media display app developed by CoolIris.
Android/data/com.myboyfriendisageek.gotya/* - this is where the app Gotya store silent pictures that it takes of whoever incorrectly tries to unlock your phone, before it sends them via email with location.
Android/data/com.shazam.android - this is where the free version of Shazam stores the advertisements that it displays.
clusb - the folder that Companion Link / Deja Office creates and stores the synch logging and cache files.
com.zinio.samsung.android app created by Zinio the Magazine app in Samsung Readers Hub. You may want to consider backing up all these sub-folders if you have purchased / downloaded magazines because this is where they are stored.
data/beautifulwidgets - of course cache created by Beautiful widgets.
data/bump_detector - cache created by the app Bump
DCIM/Camera - where the standard Camera app stores photos and video if you have selected to storage setting as "Phone" otherwise they are stored in external_sd/DCIM/Camera. Suggest you back this one up. Note I have not yet found a way for the gallery app to tell you the location of the files you are looking at!
gameloft - any games down loaded from Gameloft in the Samsung Game Hub. Worth backing up if you don't want to down load again or you want to return to saved game positions etc.
jiwire - cache files used by Wifi Finder and variants developed by Jiwire.
Kobo - again created by Kobo from Samsung Readers Hub. You may consider backing up at least the contents of Kobo\epubs as these are the books you have downloaded /purchased.
LOST.DIR created by the Android System to store file fragements or corrupted data it finds on the card. If you have files in here then it's time to mount the phone/card on the desktop and run error checking diagnostics on it. After that you can pretty much delete everything in this folder because your chances of piecing them back together are nil.
openfeint game files published by OpenFeint such as Mortal Skies. May want to back up this folder tree to save down loading again.
thaicomcenter is created by the excellent Tswipe keyboard app.
That will do for starters...