My suggestion would be to change the major parts of the articles to ensure you don't get picked up for duplicate content. You might want to change the headline and the resource box as a start and then look to change the test within the document slightly. Long term goal is never to 'trick' the search engines. just do what you think is right and yOu'll be fine. good luck and happy xmas.
Seachwap is a "no follow" article site... So you'll earn traffic only by submitting high quality articles and having a lot of Searchwap members reading and commenting on them.
articlegarden.com can be a good option, it has a good alexa rank. Though I never heard of it. Thanks buddy!
In that case,you must not be following the submission guidelines! You don't have to advertise your product in the content at all. The content should be absolutely genuine.You can write whatever you want in the resource box. Recently, Last week I submitted about 10 articles in Ezine articles and all of them got accepted(Ezine articles are supposed to have the most stringent submission guidelines)