I totallly agree with most of the comments regarding POTD. There is no doubt that there are a few outstanding photographers and their work is regularly featured which to me is fair enough.
It's up to everyone else to attain their standard to get the same recognition. Having said that, there are plenty of other readers whose work is excellent and who have never achieved a POTD. It's all a question of balance and I think that not enough of these other photographers get a POTD when their work is well worth it. It's not really an ego thing to get a POTD but it must give you a boost ... I wouldn't know !
I personally think that there are too many readers' portfolioos (That'll stir up a hornet's nest !). Can we honestly expect someone to go through over three and a half thousand portfolios ? I would suggest that there should be a minimum of ten pictures to a reader's portfolio (can you have a portfolio of just one or two pictures ?) This would make people make more effort to post their portfolio and vastly cut down the number of portfolios to make it easier for everybody. I have to say that I get quite fed up clicking on to a portfolio only to find just one or two shots.
I know that plenty of people will disagree but it's just a personal opinion !