The instructions for moving the browser cache are faulty on AC. This is the proper symlink command (the last command):
ln -s /sdcard/
cache/webviewCache webviewCache
the original AC post omits the "cache" subdirectory that you have to set up in /sdcard, which will lead Android to send your browser cache files to some dark, unknown place
Most likely back to device memory, but I dunno.
the "cache" subdirectory contains marketCache, webviewCache, and streetCache . . . you can add app caches to this directory on the sdcard if you like. Others have done it with success.
I improvise and do the browser cache this way, and it actually seems to work better at minimizing the total space Android Browser will ever take in device RAM:
su
cd /data/data/com.android.browser
rm -R cache
ln -s /sdcard/cache cache
so with this method the OS will look to the cache subdirectory and create webviewCache in the sdcard/cache, as far as I can tell this way is simpler and works better, but I'm no linux genius, I could be wrong.