It would be nice if someone can just think of a number they want to give instead of having to first divide that number by 3, 4, or $5 etc.
Thanks for the feedback, James. Users can now see the amount on the Support button. I'm afraid letting them enter absolute numbers will harm the user experience, and result in a lower conversion rate . That said, we're always open to testing new ideas, so let me know if there's any ideas to solve this without making it look too transactional.
 With BMC, supporters are not just sending you money. They feel like they're treating you for a coffee. It’s friendly and creative, and it’s a distinction that both parties feel. On the analytics side of things, we have A/B tested to confirm that this is behaviour-changing, and producing a significantly higher conversion rate.
@Jijo Sunny (founder): some of our supporters said the didn't know they can buy more than 5. So can you add one more option: MORE after 5?
@Jijo Sunny (founder): People are sending you money, they are not sending you an actual coffee. If you want to support someone, how about giving them something more than a cup of coffee? How about "pay my light bill for a month, or buy me gas for a week?
Like @xxx bought 1 coffee and left a $2 tip (3$ per coffee, 5$ given)