Awardwallet工作

I am looking to create a site similar to -- Awardwallet tracks frequent flyer miles from different airline/hotel/other accounts. User enters their username & password for each frequent flyer program, and awardwallet displays the number of miles in each account, as well as the expiration date from the miles. I assume they do this by logging in, then scraping the information from the site. I would like a similar site built, but not for frequent flyer programs (I will share full information once a developer is chosen), but it will basically be the same thing: users will enter usernames and passwords of sites, and this site will display, basically, two pieces of information scraped from the sites. Initially, I would like to give users the option of 10-15 sites (I�...