You will love it and wonder how you ever managed without it. It will pay you back in no time! I just got the DF700 to go with my 500 and that's also amazing!
That's one of the things Wordress does really well, there are some fantastic plug-ins for this. I got my site up to a page rank 2 quite quickly with a little bit of work and some understanding of SEO. It's worth taking the time and reading up on SEO. (Search engine optimisation)
I have recently completed study and bedroom furniture. Everything is made from MR.MDF. It's far superior to the standard MDF. (Mentioned in many threads on here) All my cut edges were sanded one time and then 2 primer coats applied (water based - Aquabuild)
Sanded when dry with 240 then 2...
Maybe half lap the X sections or use a standard mortice and tenon. The same with the stretcher.
With the domino I was able to set out the tenons (2 on each joint) so that the stretcher tenons didn't come in the same place, therefore creating a weaker joint. So possibly the best alternative...