Three things slow down moderation for any contribution.
1. Adding a link to a site I do not know.
Quite often the link does not work on my computer , so it takes time to find it and see what it says, or I may not be able to track it down. Whilst I cannot accept responsibility for other sites, I do not wish to advertise any site which may be putting out unsuitable material. Nor do I wish to put up something other readers cannot track down either. It is helpful to readers of this site to summarise briefly the point you have learnt from another site. If you are putting in Bank of England/government/leading newspaper reference as a source that’s fine.
2. Making personal remarks about people or institutions, or types of people.
These may be funny or appropriate, but they can also cause lots of trouble if the person or institution concerned objects and has not been shown the criticism first.
3. Going on at great length – if I am busy I just post the short ones to keep it ticking over. I do value thoughtful longer ones and get round to them as soon as I can.