I heard conflicts opinions about weather or not one should only inherit from
Mage_Core_Helper_Abstract, even when none of the helper built-ins are used.
So if I have couple of helper classes that I get using the magento
Mage::helper() api, but those helpers don't use anything from
Mage_Core_Helper_Abstract, should I still inherit from it?
My tendency goes with yes for good practice, but maybe there are performance / resources waste involved that I'm not aware of.
EDIT: I saw examples in Magento code of helpers that inherit from helper abstract without using its functions (http://freegento.com/doc/d3/d82/_helper_2_string_8php-source.html). So unless someone gives me a good reason why I shouldn't do it, I think I'll go with "always inherit from helper abstract".