One great tactic for a press release is not to say "what" but to say "how". I have been doing
PR for many years (I am the former
PR Director for ESPN Radio) and that has always been my number one thing to remember. For example, do not say what a VA is and what your business does. Say how a VA helps business owners survive the recession, gain more profits, amp up their marketing campaign, etc.
Also, make sure that you are constantly sending them out. For one of my clients, our first hits were 3%-4%, now we are up to 18% due to brand recognition. In fact, this particular client has recently been featurd on the national news a few times last month! It works :-)