more useful tools

I put four new sites in the tools section on the sidebar

For pronunciation there was already forvo, which is nice because people all around the world add to it (you can to), but I added howjsay because I've found it has more of the words I'm looking for (such as amortize). It has a lovely British accent in English.

For strange expression and idioms in English try what does that mean?
for example: "if wishes were horses this beggar would ride"

For mysterious acronyms try this finder

and someone worked to make google translator prettier and easier to use as an online bilingual (or lotsa lingual at once if you like) dictionary - shame they picked the horrible name nice translator

tipping point

tipping point: punto crítico, momento clave del cambio

the latter I think works for when this term is used in marketing (as in when so many people have ipods, suddenly everyone has them), and the former for the climate crisis, as in what may well happen in 96 months (see onehundredmonths.org)

according to wikipedia: The tipping point in the study of the Earth's changing climate is the point at which change due to human activity brings about sufficient new processes in nature to make any human reversal of the change impossible.

punto limite and punto de inflexion both seem to mean different things, mathematically.