I hestitate to chime in on this topic because I rarely put out an effort to research and supply this kind of information. I'll do so occasionally, when the request concerns something in which I have a special interest and perhaps some personal knowledge (e.g.., if it's about New Orleans music and/or an artist I actually know.)

That said, when I do respond to a request for lyrics/chords/background/etc., I always take the attitude that I'm addressing not only the individual who made the initial request, but also any current or future member, "guest," browser, or lurker who might ever stumble across the discussion. I certainly don't expect thanks or acknowledgement from any such future reader, and similarly don't require recognition from the original questioner.

I'll also confess that I sometimes ask a question without first doing much (or any) research on my own. I don't feel too guitly about this, because I feel that in such cases, I'm kicking off a discussion that might well be of interest to any number of others.