Is it ok to reuse titles of papers, i.e. if you've given a conference paper and then publish a similar paper in a journal? I've spent ages thinking of snappy titles and I'd like to recycle them but I get the feeling it's not the 'done thing'.

Any ideas?

I would refine the title for a journal paper as much as possible (and make it as key word heavy as possible). I would definitely change some aspect of the title...