I know Harriet spotted that the SucculentGuide.com species list was not working. In case any others were wondering...
The problem is that it is on a different server from CactiGuide.com, but the two sites "talk" to each other. In an attempt to shore up some security on the one server, the connection was intentionally blocked as it was not recognized.
Having just now discovered this, hopefully they will be able to undo the block soon.
SucculentGuide.com temporarily down
SucculentGuide.com temporarily down
All Cacti are succulents, but not all succulents are Cacti