[go-nuts] Errors when ignoring a return value

I like the extra security I get from the compiler when I do something like
this:

foo, err := Bar()

There're a few cases where the compiler comes to the rescue:

* I forgot to do something about it: I get "declared and not used" from go
* I forgot it can fail I might get a "multi-value in single-value context"
error
* If I decide it's not an important error I can explicitly ignore it with a
blank identifier

The code feels much more robust compared to Java's unchecked exceptions or
C's return codes but I can still screw up if I'm working with a function
that solely returns an error and I forget to do something with it:

err := Baz()
Baz()

In the rare cases where the second case is legitimate, the _ could just be
used instead. Are there any reasons the compiler lets me get away with
ignoring return values?