[colept]

There are plenty of channels for this sort of thing, for example on reddit you have sub-communities like /r/AskAVegan and /r/AskDocs

[jayeshsalvi]

But they are not one-on-one. They are public. They are not anonymous.

[GFK_of_xmaspast]

"Public forum" is not at all the same thing as "not anonymous".

[jayeshsalvi]

In public forum, anonymity is achieved by pseudonimity (one has to go to a trouble of creating account under fake name). But a service that doesn't have logins, the anonimity is default and easy.