Some apps won't move to as card

[Froyo is yummy]

Hey all I'm running android 2.2 froyo. I have installed Facebook and twitter on my phone and when I try to move them to the SD card I can't. To do this I'm using avast! Mobile security and it has an option to do so. The button "move to SD card" is blacked out for Facebook, twitter and steam. Is there anyway I can get these on my SD card? I have very little internal memory so every megabite counts. Thanks.

 

[PvilleComp]

Some apps can't be moved to the SD Card. Especially apps that have lot's of widgets like FB and Twitter. If it's grayed out then it can't e moved.