I've read the whole booklet and I'm happy to follow most, if not all, the guidelines. Kent Beck's book was influential on this.
I have a few remarks, though...
Guideline 2.2
Typed variables should mention only existing or loadable types in the system.
E.g��
selectFrom: aDate to: anotherDate
and not
selectFrom: aBeginningDate to: anEndDate
(where Beginning and EndDate are not classes in the system)
This affects guideline 2.3 because it says aBinaryBlock and there is no BinaryBlock class.
I would also add another guideline here for the use of the 'as' preffix, e.g. asDate, asString, etc. where "as" means a different representation of receiver.
E.g. asString is okay, while asShortString is not, because there is no ShortString class.
Guideline 2.6
Should be "Number of" or "Count"?
E.g.
numberOfSomething or somethingCount?
I don't like using "of" "with" or similar prepositions to name variables and classes.
Guideline 3.2��
#beSuprised would be better than #lookSurprised and follows a used convention of using #beSomething, e.g. #beBinary, #beReadOnly, etc.
In the Guideline 5.6 the examples are the same.