I have an OSS 'fun project' - I'm still amazed by the number of issues/emails I get raised which say:

"You should rewrite in" / "Why does't it do" / "Make it do".

It's nice that people are using it. I generally (try to) assume this is a language/cultural thing, and people don't realise that they're coming across as a bit rude in English.

But, it would be nicer if people approached commenting on OSS by first thinking "Author is doing this for fun, unpaid, and I'm getting something nice out of his/her time", THEN writing their comment.

I'd get the same issues raised, and that's fine. But the language might read a bit nicer.