Quite a few people have been asking how they can support http://bookhashtags.com or have their book featured on the home page.
As a result I have combined these two things together and it is now possible for authors or publishers to feature their books on the home page by visiting http://www.bookhashtags.com/getyourbookfeatured
This was achieved using PayPal's Express Checkout API to take payment - I am thinking of writing a blog post on using PayPal Express Checkout with C# ASP.Net so if that would be useful to you please let me know in the comments. Although PayPal has a lot of documentation finding the relevant parts and putting them all together did take quite a bit of time and effort so maybe a blog post on this could save other people some pain?