After a long time without updates, I'm finally releasing the next version of OnTopReplica. This time it's version 3.0 and it includes some nice new Windows 7 specific features (while still keeping Windows Vista compatibility, obviously).
Of course there have been also some more basic changes which improve the usability or fix some strange behavior. And a brand new icon!

The following is a vague description of the changes you'll find in the application:
Improved resizing: now you would think that resizing a window would be pretty simple and that OnTopReplica, being a simple resizable clone of a window, would implement it correctly. But truth is, you're wrong! Resizing is pretty easy, but there are a lot of cases in which trying to keep the aspect-ratio of the original window can be computed or rounded wrongly and result in a slightly deformed window. This is now completely fixed, finally.
Windows 7 integration: OnTopReplica now sports two integration modes with the host OS. On Windows Vista it will continue to create a notification icon as usual. On Windows 7 on the other hand, the application will be visible as an icon on the task bar and will integrate with Aero Peek (that is, OnTopReplica clones will show even if you're Aero-Peeking to the desktop or to some window).
Group switch mode: a special mode that has been suggested by an EVE online player nonetheless.
Simply put, you can enable this mode by selecting a group of windows you wish to clone. OnTopReplica will then clone the least recently used window of that group. This feature can be useful if, for instance, you need to edit a document while keeping a second document as a reference. You can select both documents in a group and switch between them, forcing OnTopReplica to always clone the one in the background.

Better OS integration: apart from the Windows 7 features mentioned before, there are other features that apply to Vista too. For instance, the Flip 3D effect (the one you activate using [Windows]+[Tab]) now ignores OnTopReplica, leaving the cloned windows always on top. When you close a cloned window, the application will now detect it and destroy the cloned thumbnail too (before it would stay in an undefined state until you resized the window). System-wide hotkeys have been added: [CTRL]+[SHIFT]+[O] hides or shows OnTopReplica quickly. [CTRL]+[SHIFT]+[C] clones the window that currently has the user's focus. Those hotkeys aren't customizable yet, but will be eventually.
Click forwarding improvements: you can now enable “click forwarding” and forward right clicks to the cloned window as well. To disable this feature once you're done, simply push ESC.
Other stuff: there have been several bug fixes (for instance, creating a 0x0 pixel region doesn't crash the program anymore, woohoo!) and some minor improvements (the window now has a title which is displayed in the task bar, while it always stays hidden from the Alt+Tab list).
That should be all for now! Please go ahead and download the update (or wait until the app updates automatically). Let me know: suggestions, feature requests and bug reports are always welcome! 
By the way, I've opened a community forum about OnTopReplica on CrowdSound which will allow users to submit bugs and ideas which can be voted and commented on. Should provide a better way of organizing the project instead of blog comments and e-mails. Check it out.