I'm very glad if you use or at least read sometimes my blog. However, I'd like to give you a list of wonderful blogs which are useful if you are interested in applied mathematics and programming for simulation.

My favorite one is written by Arthur Charpentier, a French mathematician. His blog is called Freakonometrics and is a wonderful store of R codes and explanations of statistics:
http://freakonometrics.blog.free.fr/

R websites:

-I can't do a reasonable list of websites without talking about R-cran the website of R. http://cran.r-project.org/. You can find nearly everything about R on this website, especially an important documentation about the software.

-R-bloggers : http://www.r-bloggers.com/. This blog is a useful summary of many blogs related to R. If you are interested in R in general, or if you want to learn how to code in R or if you are interested in a particular mathematical issue, this website is a great hub of knowledge.

-R-statistics (http://www.r-statistics.com/) is another valuable resource for examples of codes in R.

-SAS and R (http://sas-and-r.blogspot.co.uk/). Even though this website is not only in R but also in SAS, I love this website. It made my life better when I was coding in SAS or in R.

-Stackoverflow (http://stackoverflow.com/). This website is about programming in general. It is useful when you have any bug you can't solve. It's a forum where people help or ask for help about any programming problems. When you can't already find someone who had experienced the same problem than you, you can ask for help. The answers are very reactive and you don't have to wait too long before being helped.

Mathematics websites:

-A good blog about probability and its applications is http://probabilityandstats.wordpress.com/. I like it because funny topics are analyzed with a serious approach.

-Gower's weblog is certainly the most well known blog about mathematics. Therefore it has to be in my list. http://gowers.wordpress.com/