virtuesmind, yes, we can. You need to go to Control Panel -> Blog -> Module settings, and enable the option "Enable ability to choose date of entry adding". When posting an entry, you will be able to choose the date when it will become available for all users. And very soon it will be also possible to choose the exact time, not only date.
bigblog, uCoz can block a website for automatic entry posting if it MASS posting (usually with the help of special scripts), i.e. entries are posted too often (like more than 2 per minute) and too many per day. It has nothing to do with the uCoz's system feature of delayed posting.
I'm not active on the forum anymore. Please contact other forum staff.
virtuesmind, you don't need to worry at all about your site being blocked as long as you are scheduling posts using the system features. It didn't need to be mentioned earlier. You can schedule posts as often as you life, even if daily.
Jack of all trades in development, design, strategy. Working as a Support Engineer. Been here for 12 years and counting.