First of all, thanks for all the effort you and Ash put in to the running of the site, it truly is appreciated. As far as solutions go, the best one I've heard to date is to limit the number of characters in the 'Topic' section. I am sure that reducing the number of words in the title will have little affect on the number of replies.
For example, If I were to put in 'Times 1304 Cryptic' in place of 'Saturday Times Jumbo Cryptic 1304' or ST 4781 instead of 'Sunday Telegraph 4781 Clue No 32a' I sincerely doubt it would affect the number of contributors clicking on the link to assist in the answer.
Anyway, just are just some preliminary thoughts and I'm sure other contributors have many others.
Ps, Chris, if your still if you still looking in, I just wanted to say I thought your 'Oasis icon at impromptu gathering' was fantastic - as was the winner of course..