http://mathoverflow.net/questions/54237/special-values-of-l-functions-as-periods
http://mathoverflow.net/questions/36870/numerical-evidence-of-beilinsons-conjecture-in-local-fields-and-function-fields
http://mathoverflow.net/questions/22171/are-there-analogues-of-beilinsons-conjectures-for-motives-with-coefficients
nLab page on Beilinson conjectures