I want to offer bounty to a question and the question already have a bounty. Can I add additional bounty for the question? Also the question is not asked by myself.
See How does the bounty system work?
Can I raise my bounty?
You can offer as many bounties on a question as you want. However, only one bounty can be active on a question at a time. Moreover, any user may have at most 3 concurrent bounties at a time.
Can I add additional bounty for the question?
As in adding to the total? No.
4That's disappointing. It could be a group effort - 4 people giving 50 reputation as a bounty instead of 1 person giving 200 reputation makes giving bounties more desirable.– MochanFeb 1, 2013 at 9:49
3True but nothing stops you to post it as an idea for improving SE ;) @mochan– RinzwindFeb 1, 2013 at 12:31