Donate options for apps not prominent enough, can be misleading.
I've put two things in the title of this issue, because they are both causes of the same problem. Somebody recently pointed out that if you visit f-droid.org and view an app which doesn't have any donate options, then all you see is the F-Droid donate box (example). This is not such a problem, because if there are no donate options, then we can't offer a donate option (and we should not have to remove the F-Droid option due to this). However, the title should probably say "Donate to F-Droid". I realise that it mentions F-Droid in the text below, but it could probably do with more clarification.
When an app does have donation options, it is somewhat measely compared to the F-Droid donate option. This example has a single Flattr icon, and is dwarfed by the F-Droid donation option. However, at least it has a visual indication that people who use Flattr to donate may be familiar with. This example only has a link, which is visually indistinguishable from the other links above it.