HOFMAN  Acceptable (free) OCR is not possible for free and within the contraints of Apple's PDFKit, unfortunately. For column selections, use the Option key, read the FAQ on the wiki for more details. This is also behavior dictaed by Aple's PDFKit, so if you'd want this to improve more than what Skim is capable of, you should ask Apple.   
(Version 1.1.13)

HOFMAN  For 1, simply choose "Use Current view Settings as Default" from the PDF menu. For 2, you can block-select by holding the Option key (this is standard selection behavior in Cocoa apps). Also read the FAQ on the Skim wiki for more tips with regards to this.  
(Version 1.1.13)

HOFMAN  Why don't the Description and Requirement sections agree? One says it's for Intel and PPC, while the other says it's for Intel only. The fact is, the Description has it right. MU, please fix the Requirement.  
(Version Update 2)

HOFMAN  The concept is really nice. But unfortunately the implementation is very buggy. There are some critical bugs, and it has a huge chance to lead to namespace clashes, due to its implementation of many categories on Cocoa objects. Due to the nature of this framework, as a simple drop-in utility, this is pretty serious. Moreover the localizations are missing.

Anyone should be aware this is a *beta* version. MU should have noted this, probably this version should not have been listed at all.

I strongly advice developers not to use this version. And if you do, be aware that you *must* fix its bugs and be very well aware of the namespace problems.  
(Version 1.5b1)