reading the manpage for CURLOPT_HTTPGET, it is unclear to me whether if is ever necessary/useful to pass a value other than 1 for "useget"

Some possibilities occur to me:

1. You should do a setopt for CURLOPT_HTTPGET with useget of 0 whenever you switch from GET to POST or another method, and aren't doing curl_easy_reset()
2. You don't need to do a setopt for CURLOPT_HTTPGET when switching from GET to POST because setting CURLOPT_POST or the equivalent for other methods automatically sets CURLOPT_HTTPGET to 0.
3. If you need to set CURLOPT_HTTPGET to 0, you're doing things wrong and should be calling curl_easy_reset() more often.

It would be useful if the CURLOPT_HTTPGET manpage contained documentation about this. Probably only a single added sentence would do.

I suspect this suggestion is applicable to the manpage for CURLOPT_POST as well.