Flash and After Effects

[FONT=Calibri][SIZE=3]Hi,[/SIZE][/FONT]
[FONT=Calibri][SIZE=3]I have done some full Flash and actionscript 3.0 based web sites, so I feel very comfortable working on it but this weekend I decided to learn After Effects CS4 and a question immediately popped up, so I decided to ask the experts.[/SIZE][/FONT]
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[FONT=Calibri][SIZE=3]Does anybody from here use both programs (Flash and AE) for web purposes? If yes, how are you guys using it and how you guys know when to include After Effects? [/SIZE][/FONT]
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[FONT=Calibri][SIZE=3]Is After Effects something to be considering to learn or this is strictly for video?[/SIZE][/FONT]
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[FONT=Calibri][SIZE=3]The reason I’m asking is because I was playing with it and it surprised me how easy it is to add effects.[/SIZE][/FONT]

[FONT=Calibri][SIZE=3]Any comments will be appreciated.[/SIZE][/FONT]
[FONT=Calibri][SIZE=3]Thanks,[/SIZE][/FONT]
[FONT=Calibri][SIZE=3]Fs_tigre[/SIZE][/FONT]