awesome! It works really well!
Bitcoin is ideal for donations but very few developers are focusing on it! you are doing great!
I suggest to add an option to configure the time of auto tipping (for me 20 sec - 1min would be ideal)
also I think you should have a test page (or mention that autotip is enabled on its main page) to see if it works and maybe a notification -> tip sent to x (data-recipient) - maybe a toolbar button to access the options also for non-eperienced users? just sayin...
If I manage to find some time I hope to help with the development of it!
big up for the microtip meta tag! I think that with Bitcoin the web needs to have a w3c web standard for that!
edit: I think it's the time for someone to code a quick wordpress plugin to add the microtip meta tag to wp blogs and websites
also it would be great (for v2 or another project) to have the possibility when you favourite a source (tweet/youtube video/reddit post/etc) to try to find the btc address of that person by traversing its social network identity in search for an account that has its btc address (youtube/twitter/reddit >>> keybase/onename.io/etc) and use that to tip!