Gosh, I think I have about a dozen, mainly selling accounts, but also a couple of buying accounts - all serve their purpose well, it really varies so much between individuals, really it is just what works for you.

I don't have a separate posting to discussion board account, never will. 

My personal choice, mainly as I could never really take other sellers advice truly seriously, without being able to peek at what they sell, how well they do etc etc.  Advice is so easily given on these boards, but I like to check the credentials of those giving it.  I respect that some may have fear of "backlash" buying behavior from posting, but I think demonstrating that you walk the talk is more important, and I have to say I have made quite a few sales from posting on the boards - LOL no doubt I have lost a few too !!

Over the years I have become familiar with many of the selling accounts of those that use posting accounts, and a number are the real deal, some are all talk of their selling prowess and knowledge with seemingly little to back up it up, others just seem to be mischievous and don't seem ever to conduct business in the way they advise others to IMO.