I've got to say that sending out a press release if you only have $1000 is just not the best use of funds IMO. Press releases have their place but is it really what you spend your first $1000 on? No way.
Adwords seems the most logical choice. I'd spend $20 and buy Perry Marshall's Adwords book and learn how to do split testing. With a $1000, you shuld be able to generate enough impressions to figure out what keywords work, what your competitors are doing in Adwords, and have a handle on what your landing pages are doing. Once you have that then you can more ably spend the next $1000.
Adwords seems the most logical choice. I'd spend $20 and buy Perry Marshall's Adwords book and learn how to do split testing. With a $1000, you shuld be able to generate enough impressions to figure out what keywords work, what your competitors are doing in Adwords, and have a handle on what your landing pages are doing. Once you have that then you can more ably spend the next $1000.
Here's that Perry Marshall book: http://www.amazon.com/Ultimate-Guide-Google-AdWords-Million/...