Adam Curry (who pioneered a lot of v4v) talks about this a lot.
If I can summarize it:
It’s not begging because you’re putting something out there to be enjoyed whether it’s a podcast, music, software, etc.
You remind people of that if they like what they are hearing, seeing, using to consider giving what they consider is appropriate.
In some cases there’s a Time, Talent, or Treasure component.
For example with Damus you could offer software development or hosting or sats.
Begging is charity. V4V is reciprocation.