Marketing suggestions for this Application and how to solve HTML problem...

Hello,

I need suggestions with marketing my application for websites. My application provides reviews for customers. It is free for website owner. Charging opportunities will come durning testing, but it remains free for website owners.

My target group is UK and mostly tourism websites.
Big concern place is that website owner do not know how to install applications embed code into HTML. They have build website (with outsourcing) and no longer have developers around to do this and it is hard to get trust to do this by myself over the internet.

Here are my four marketing options:
SEO - I'm working on it, but it takes time because my website is almost ready, some finishing touches.
Salesman - too expensive at the beginning. I can't do this by myself because my English is not so good and I don't live in UK.
Email - This is what I have done so far, but success rate is only 2%.
Visiting there offices - I don't live in UK and salesman is too expensive at the beginning.

I appreciate giving me more marketing suggestions and also how to solve this HTML installation problem.

Thank you