I really like Unsanity's WindowShade X and Labels X haxies which I began using with Tiger and also installed last December on a Snow Leopard machine. I have not had any trouble with them on either system. Checking the Internet, I can't find any info about whether or not they work in Lion, which I have not yet upgraded to. Anyone else dealing with or interested in this issue?
Well, after being notified via MacUpdate of a discount on the cost of Deskovery, and reconsidering my original opposition to it, I broke down and paid my $20 or so with tax.
It does what I wanted from Window Shade. The other bells and whistles and wiggly windows I can live without.
I have found at least one bug: it does weird things to an open xls file under certain circumstances, but, again, I can live with that for the convenience of having windowshade control—which should be provided as an option in OS X anyway!
Thanks to all for their comments. I now leave this thread to you! (I started this thread back in July, 2011.)