I think it's particularly difficult and noticeable during competition time. I would be really reluctant to start placing more rules within a relaxed forum such as this.
However, perhaps there should be a separate section for 'forum competition songs' (which most regular members are likely to look at/be involved in anyway)
On the main review thread we can just continue to ask (when the need arises) that people are polite and considerate about posting too many songs for review. I think newbies can get carried away because finally they've found there's somewhere where other people are excited about creating songs too and they can get unbiased critique, most people probably don't do it to annoy!
Normally it doesn't take long for a new member to realise bombarding the reviews thread with songs does not lead to more reviews!
I would like to add that I also love that we all have such different tastes in music I don't find disagreeing with someone offensive but rather interesting instead!
