The rapid indexer wasn't designed to need to follow a redirect. All that it does is load a page. When that page is loaded its dynamically created and thus the search engines can find it.
Do you have some specific examples of urls that need to redirect in order to work?
1.I was referring to frozen connections with fast poster.
2.Is one few-lines comment with dozens of spin words good enough for fast poster or i should have more comments?
3.Do you think its normal that my vps cpu usage jumps frequently to 100% (6 threads) even if its 1 core vps with 2gb ram and im not using any other program except scrapebox? For example its on 5% then jumps on 32% then random higher number, then stays a little bit at 100% then drops and all over again.
1 - If its locked threads it won't work. I mean once scrapebox hands the connection to windows, its forced to wait till windows/mac hands it back. So if the thread gets locked by either the OS or any 3rd party software such as security software or even skype, utorrent etc... pretty much any software that accessed the internet can lock threads. IF that happens, then scrapebox is stuck waiting indefinitely.
You can go to settings >> connections, timeouts and other settings >> other >> poster min threads. You can toy with this, and try setting it to like 20% of however many threads your using. So if you are using 20 threads, try putting it to 4.
When it gets down to those last 4 threads scrapebox will try and kill any remaining connections. This is most useful with the automator. Sometimes it works well and sometimes scrapebox is unable to kill those threads.
2 - there isn't a wrong answer here, it depends on your application. If in doubt you can scrape some comments and then spin those and you will have loads.
3 - Yes this can be normal. Windows gets to decide cpu usage, and so despite scrapebox handing off calls as fast as it can, windows will still que things and manage things as it sees fit.