I finally registered for a Twitter account and just added it to my Daniweb Profile.

At first, I tried to add the full URL, but an error message popped up stating only letters, numbers, and underscores were allowed. So I changed the field entry to my username only (not even the @ sign.) It was then accepted.

In the Google Plus field, the complete URL is entered, and is behaving as expected.

In the LinkedIn field, the complete URL is entered, and I believe it is behaving as it should.

It seems inconsistent that some fields accept the complete URL but another refuses to.

Is that how it is supposed to work?

Yes ... we used to use the official widgets for each social media site in your DaniWeb profile, and so we accepted them in the format that the widget wanted them.

I know it's been a long time coming, but the inconsistencies have been fixed with our new rollout.