[invincible]

I am interested in getting into newsgroups. Before moving to a pay server i thought i would try using the ntl one first.
I have a few questions
I believe they have 7 days retention, is this true? Is there a limit to how much you can download? Do they have problems with users downloading large amounts? Do they monitor the server, or keep logs? Would you recommend i use it (mainly to practice with and understand newsgroups further)?

Thank You