Update 2013-03-20: Flattr now has built in support for this so no need to use Flattrstar anymore.
Today is Valentine's Day and what could be better than to give more love to those who share stuff you like?
If you're not familiar with Flattr then head over to their site and watch the short video that explains it well.
By using Flattrstar you can flattr tweets, photos, videos and other content automatically. You just connect it to Flattr and pick the services you want to use. The site is all in German but you can probably guess how to use it or just use Google Translate.