Adobe just announced the new searchability features of Flash complete with a specifications document of the SWF format. Google already announced that they are indexing SWF as of now to a full extend and according to Adobe Yahoo! are soon to follow.
This is splendid news, as it will allow people to write APIs to get text information out of SWF movies in a much easier way. Sure there were several Flash Decompilers already available, but this will make this much more mainstream and people will take adding text information to their Flash movies much more seriously.
On the other hand, this will also lead to more security exploits, but that is to be expected from any disclosure of file format specifications.