Sorry - I didn’t explain too well.
I have application X. It makes read requests that are subject to a rate limit of max 450 requests per 15 minutes.
I can get round this to some extent by registering application Y, which, from what I understand, has its own, separate bucket of another 450 requests per 15 minutes.
In reality, both applications serve the same website of mine. So in effect, I can register multiple applications with Twitter and help avoid the rate limits. Hence I’m not sure if this is proper - or is this normal?