Did a graph on Alexa comparing ISP, DT, SS, and StockXpert and the dip at June is telling.
Bit too early to tell about June from Alexa - if you take out the smoothing, the June dip looks awfully like a normal weekend to me -its just that the last statistic available is from the 7th which happens to be a Saturday. Click on the little - that removes the smoothing of the graph and the results should reflect weekly patterns far better.
The interesting thing about this graph is that March, April and Early May look down - June seems to be picking up.
[edited to remove expired image]