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2 apps that are beginning to pick up the slack of the lacking expose/spaces in lion:

search for an app named "show windows" in the app store, a very useful expose all and re-arrange app

then, of course, "Change SPace" from pennysmalls:
http://pennysmalls.com/change-space-grows-up

IMO, There is a big gap in the market for a worthy replacement, a REAL virtual desktop solution for Lion. ESPECIALLY FOR "PRO USERS", I use 12 spaces, 4x3 on dual monitor setup.
 
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