It would be helpful if those posting a bounty add "[BOUNTY]" to the subject line of the post, thus allowing subscribers to the list to filter.
If an Asterisk issue is present for the new feature or bug fix on the Asterisk issue tracker the "bounty" label can be added to it to allow easy searching. A comment should also be added stating the details and offer.
What is a bug bounty?
It is the case that some corporate users of Asterisk will pay you hard cash for your work on developing patches and bug fixes. Often, there are reasons that a firm can't or won't fix/patch Asterisk internally, and wants to outsource that work to the larger Asterisk community. The Asterisk community wins whenever a bounty bug is resolved because everyone benefits from that work. The company sponsoring the bounty wins, because their specific problem is fixed. And, of course, the programmer wins because they're paid.
This was discussed on the dev list in Jan 2013: http://lists.digium.com/pipermail/asterisk-dev/2013-January/058351.html
Finding bug bounties
The archives of the Asterisk Development mailing list located at http://lists.digium.com/pipermail/asterisk-dev/ can be used to locate bug bounties. For bounties which are also present on the Asterisk issue tracker you can use the following search to find any open bug bounties: